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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/2acea43c-3a70-4f60-a960-e611e8ec825f/Assortment_of_microfluidic_chips.jfif</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>let us chip away at your apprehension</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/616526a9-6a3a-43b1-b3ca-4fbfff8e673b/7200676.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>The luer lock connector in all its majesty</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/a35fd2d4-1188-4315-a3bc-0c8ce29855a9/316aJ%2BHCbaL.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>What'‘s up church? THis is Upchurch.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/a9653f17-5a41-4897-94de-bb8a3d74791a/81ZNRHJ%2BcIL.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>One of our rare 4 channel connectors.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/ad9f5ff3-b97b-416e-a3ee-7ad2c7a82f85/Y-shaped-microfluidic-channel-for-in-flow-fabrication-with-a-fiber-made-in-the-low-flow.png</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>A y-channel chip in action source: https://www.researchgate.net/figure/Y-shaped-microfluidic-channel-for-in-flow-fabrication-with-a-fiber-made-in-the-low-flow_fig2_311243106</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/011ae60e-a952-4a60-a8c5-beaf9e570144/Microfluidic-Analysis-Chip-Biological-Microfluidic-Chip.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>The cross-channel chip. don’t be cross with it.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/6aa4c992-25bf-4569-aaea-e286cbc02057/Drawing_Fl_581.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>Straight channel lab-on-a-chip. Helping you stay on the straight and narrow</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/206d87a7-1502-4b43-b0a8-d756c984edef/TC_microfluidic_chips.jpg</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>T channel chip. HE’s A chip off the ol’ block!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/c9988feb-94f4-4fc0-ae80-cddf71da9f9e/Custom_chip_link.png</image:loc>
      <image:title>Firefly Sci News - How to Choose Your Lab-on-a-Chip - Make it stand out</image:title>
      <image:caption>We have the technology!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2021/7/18/changes-to-nist-guidelines</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2021-07-18</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1626649826835-0GIQ4QOGZOEBBIRTC4W4/3D-Women-Presentation-01.png</image:loc>
      <image:title>Firefly Sci News - Changes to NIST Guidelines - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1626649898333-UYPI3N8V9NM26KM88NE6/m90.png</image:loc>
      <image:title>Firefly Sci News - Changes to NIST Guidelines - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/5/22/how-to-determine-fireflysci-part-numbers</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-05-22</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1558547997810-WZPC062VZGLZ81YTNKOF/fireflysci-type-1-cuvette.jpg</image:loc>
      <image:title>Firefly Sci News - How to Determine FireflySci Part Numbers</image:title>
    </image:image>
    <image:image>
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      <image:title>Firefly Sci News - How to Determine FireflySci Part Numbers</image:title>
    </image:image>
    <image:image>
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      <image:title>Firefly Sci News - How to Determine FireflySci Part Numbers</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/5/9/free-ground-shipping-on-domestic-website-orders</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-05-09</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1557420297884-3RC9K4BV0QUALZVTTX8S/3D-Women-Carrying-Dollar-02.png</image:loc>
      <image:title>Firefly Sci News - Free Ground Shipping on Domestic Website Orders!</image:title>
      <image:caption>Yay free shipping!!!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/4/10/how-to-use-type-49-demountable-flow-through-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-04-10</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/4/4/gb015oa0azy4o7ran22h52ote7yvsh</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-04-09</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/2/28/how-to-calibrate-a-spectronic-20d-spectrophotometer</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2020-08-14</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/2/26/fireflysci-no-longer-re-calibrating-third-party-calibration-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-02-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1551206208426-K0SRUO0HG99TFR9E39US/Disgruntled+Metal-On-Quartz+Cat.jpg</image:loc>
      <image:title>Firefly Sci News - FireflySci No Longer Re-Calibrating Third Party Calibration Standards</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2019/1/16/does-fireflysci-calibrate-spectrophotometers</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-01-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1547676003844-ILMT43U21WNTK3EDKB65/3D-Women-Doctor-01.png</image:loc>
      <image:title>Firefly Sci News - Does FireflySci Calibrate Spectrophotometers?</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/12/5/where-are-fireflysci-cuvettes-and-flowcells-manufactured</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-12-20</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1545331518424-DTD39MRV10QOBU4JNK88/globe.jpg</image:loc>
      <image:title>Firefly Sci News - Where are FireflySci Cuvettes Manufactured?</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1545331674351-V11T7BIVHLX6EIOUVGPJ/NSG_cool_curves_with_web.png</image:loc>
      <image:title>Firefly Sci News - Where are FireflySci Cuvettes Manufactured?</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1545332084867-70QA6EE1IP0FO72HX166/IMG_3481.jpg</image:loc>
      <image:title>Firefly Sci News - Where are FireflySci Cuvettes Manufactured?</image:title>
      <image:caption>Fire fusing a cuvette</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1545332241248-W2Q53T8NQK9FRFPZCSHY/cuvette+inspection</image:loc>
      <image:title>Firefly Sci News - Where are FireflySci Cuvettes Manufactured?</image:title>
      <image:caption>Cuvette inspection fun</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1545332345671-W4D5CUWQADTTWB5ECZ65/not+the+perfect+cuvette+manufacturer</image:loc>
      <image:title>Firefly Sci News - Where are FireflySci Cuvettes Manufactured?</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/11/27/detailed-breakdown-of-getting-a-custom-cuvette-quote</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2020-02-03</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1543593629947-PBR15ISDYIRV03NFAPDR/m47.png</image:loc>
      <image:title>Firefly Sci News - Walkthrough of Getting a Custom Cuvette Quote</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1544029392084-O8BCFMVXQFZROM4KC035/Caliper-san.jpg</image:loc>
      <image:title>Firefly Sci News - Walkthrough of Getting a Custom Cuvette Quote - Inspection caliper</image:title>
      <image:caption>One of our inspection calipers used for verifying the dimensions of a custom cell</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1544029391846-AJYUGRBS8M96COWJLZGN/14X+Loupe.jpg</image:loc>
      <image:title>Firefly Sci News - Walkthrough of Getting a Custom Cuvette Quote - 14X Eye Loupe</image:title>
      <image:caption>A 14X Eye Loupe we use for checking for optical defects</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1544029392565-7Z9QELF1NOD17N9MQNHP/Inspection+Report.jpg</image:loc>
      <image:title>Firefly Sci News - Walkthrough of Getting a Custom Cuvette Quote - Inspection Report</image:title>
      <image:caption>An inspection report validating the optical properties of our cuvettes</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/5/17/prototype-cuvette-washer-demo</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-05-17</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/5/7/new-video-on-flow-cytometry-cells</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-05-07</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/5/3/potassium-dichromate-sulfuric-acid-vs-perchloric-acid</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-05-04</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1525447513447-WLN7Q1X6EKGE8HUIH8Y4/fireflysci+potassium+dichromate+calibration+standard</image:loc>
      <image:title>Firefly Sci News - Potassium Dichromate - Sulfuric Acid vs. Perchloric Acid</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/4/18/new-video-how-to-use-a27-zdimension-kit</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-04-19</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/4/12/new-video-posted-extended-tolerances</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-04-12</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/4/8/brand-new-scientific-glass-blowing-shop</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-04-11</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1523459599518-YKN5R8Y65L9VYGTO1FXT/Fireflysci-scientific-glassblowing-1.jpg</image:loc>
      <image:title>Firefly Sci News - Brand New Scientific Glass Blowing Shop!</image:title>
    </image:image>
    <image:image>
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      <image:title>Firefly Sci News - Brand New Scientific Glass Blowing Shop!</image:title>
      <image:caption>Cuvette Washer made by scientific glassblowing!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/3/8/snow-delays</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-03-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1520534470782-ENI3SED45X7QQFZCXWIP/ffs+snowman.jpg</image:loc>
      <image:title>Firefly Sci News - Snow Delays</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/2/26/fireflysci-spectrophotometer-calibration-kits-discount</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-02-28</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1519849725117-C9T58DOQA2C2E5FFAI9D/fireflysci.jpg</image:loc>
      <image:title>Firefly Sci News - FireflySci Spectrophotometer Calibration Kits Discount</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/2/8/whats-the-best-cuvette-cover-for-me</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-02-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1519327936045-0QOZFVR7SL68N5Q4DCQV/fireflysci-cuvette-caps-and-covers.jpg</image:loc>
      <image:title>Firefly Sci News - What's the best Cuvette Cover for me?</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1519328811370-T161W31RH6H43YFIZH7G/Inverted-1UV10-cuvette-with-LDPE-cover.jpg</image:loc>
      <image:title>Firefly Sci News - What's the best Cuvette Cover for me?</image:title>
      <image:caption>Inverted 1UV10 Cuvette with LDPE plug</image:caption>
    </image:image>
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      <image:title>Firefly Sci News - What's the best Cuvette Cover for me?</image:title>
      <image:caption>FireflySci Standard PTFE Stopper</image:caption>
    </image:image>
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      <image:title>Firefly Sci News - What's the best Cuvette Cover for me?</image:title>
      <image:caption>FireflySci Screw Cap Threads</image:caption>
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  </url>
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    <loc>https://www.fireflysci.com/news/2018/2/13/another-happy-fireflysci-customer</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-02-13</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2018/1/10/our-apologies-for-late-shipments</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2018-01-12</lastmod>
    <image:image>
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      <image:title>Firefly Sci News - Our Apologies for Late Shipments</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2017/12/6/rockin-a-ffs-winterhat</loc>
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    <priority>0.5</priority>
    <lastmod>2017-12-06</lastmod>
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      <image:title>Firefly Sci News - Rockin' a FFS Winterhat</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2017/11/27/buying-fireflysci-cuvettes-is-even-easier</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2017-11-28</lastmod>
    <image:image>
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      <image:title>Firefly Sci News - Buying FireflySci Cuvettes is Even Easier</image:title>
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  <url>
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    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2017-11-22</lastmod>
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    <lastmod>2021-09-30</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1468525090666-NHDDH15KFRA0RAKFI6IC/96+well+plate+with+fireflysci+standards</image:loc>
      <image:title>Firefly Sci News - FireflySci 96well plate adaptor and 96 well Calibration Plates</image:title>
      <image:caption>Plate adaptor with NIST calibration standards</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1468521133890-5P87HZ6O7H38OLCPUPI3/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - FireflySci 96well plate adaptor and 96 well Calibration Plates</image:title>
      <image:caption>flourescence calibration 96well plate</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/6/16/how-not-to-break-your-cryogenic-cuvettes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-06-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1466097829392-MXTMDL8BVLEPZOOEYX7J/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - How Not to Break Your Cryogenic Cuvettes</image:title>
      <image:caption>To crush your cuvettes, to see them driven before you and to hear the lamentations of your lab managers!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1466099644031-L65893NLLRVFBAN3HJOR/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - How Not to Break Your Cryogenic Cuvettes</image:title>
      <image:caption>Closeup on our cryogenically fused 64fluv10 cuvette</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1466101416766-736U364QDH9WK46IN4IN/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - How Not to Break Your Cryogenic Cuvettes</image:title>
      <image:caption>Don't be like T1000. Cool and warm up those cuvettes very, very slowly!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/6/16/fireflysci-official-elf-spotters</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-06-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1466098863991-KJKH0AJHFKHHX877QHMP/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - FireflySci Official Elf Spotters!</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/6/1/have-an-srm-beer-on-us</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-06-06</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1464808343690-R77ZFG285YFWF6GRQGAE/srm+beer</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
      <image:caption>We told this dude not to get the cuvette beer helmet.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1464808969875-OJHJAWV6L0P0ZW8Y60X9/beer+srm</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1464808509060-5FJRKGP14QK3QGXZ30RA/beer+srm</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
      <image:caption>I'd like to propose a toast:  To cuvettes and beer!  May they always work happily together and bring each other joy and comfort.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465238052643-S5204ILYD3HY7XDKHRZX/beer+srm+cuvette+rack</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465238004954-77JHS55EHO556JZMQ10F/srm+beer+cuvette</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465238170205-KUW8B72O75NZPXN3SWP2/srm+beer+results</image:loc>
      <image:title>Firefly Sci News - Have an SRM Beer on us!</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2017/11/16/kuidas-valida-uv-vis-mtmiseks-kvett-ja-kveti-materjalide-selgitus</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2017-11-17</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510881271162-5U6MBPVKPPNEI7C5ZOO3/cuvettes%2Bfor%2Buv%2Bvis.jpg</image:loc>
      <image:title>Firefly Sci News - Kuidas valida UV VIS mõõtmiseks küvett ja küveti materjalide selgitus</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510881080822-YEAJ4KOW5O6Q5FJIHJ98/cuvette%2Bmaterial.jpg</image:loc>
      <image:title>Firefly Sci News - Kuidas valida UV VIS mõõtmiseks küvett ja küveti materjalide selgitus</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/4/14/96well-plate-now-available</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-04-20</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1461171118946-CQDS3JFZYUL3UKOQ5HK2/96well+plate+fireflysci</image:loc>
      <image:title>Firefly Sci News - 96well Plate Now Available!</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1461171507107-QCFV58ZMCISS3KQAG3P8/96+well+plate</image:loc>
      <image:title>Firefly Sci News - 96well Plate Now Available!</image:title>
      <image:caption>Example of flat bottom plate</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/4/7/february-customer-of-the-month-finally</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-04-07</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/3/30/january-customer-of-the-month</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-03-30</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/3/29/oh-my-gosh-come-on</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-04-05</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1459277966550-OUZ3WNQVNGBMULF8I3OQ/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Ah, for Pete's Sake!!</image:title>
      <image:caption>weak sauce!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1459279634596-O9B7BWBUK1XAW44OD4VV/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Ah, for Pete's Sake!!</image:title>
      <image:caption>muahahahaha...muahahaahaa!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/1/27/hymw3qhlcxwsfeid36mwppay1jzcum</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-03-29</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/1/26/kvette-fr-uv-vis-messungen-kvetten-material-guide</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-26</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453840029525-0ZUCLX0U5W2GJI6RL948/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - UV-VIS Küvette Messungen &amp; Küvetten Material Guide</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453839532289-IVMBQQAWZCH7JVXU83AP/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - UV-VIS Küvette Messungen &amp; Küvetten Material Guide</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/1/13/z-dimension-or-centre-height-a-guide-to-finding-the-correct-window-height-for-your-cuvettes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-19</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452801530101-UT0EQ41HGA0ICJJ9SKSP/701MUVA-C+z-dimensions.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452801529385-WIOPYV7ZURC7XGPFYVVP/701M+ZDimensionA.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452801529550-K7B7H64GI5I8G5AF5CJX/701M+ZDimensionB.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452802932673-B43ABT1XLEDLU5TX2KMH/Base+Thickness+Photo-+9B-9BM.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452802932441-HBTW0V3NGINF54PXFZM9/9BUV10-+Base+Thickness.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155294256-LQIBDNJYKLIMWPW81D07/20160114_191330.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155356843-VA4XXHORIFQTM08UHZ6C/20160114_191451.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155376456-KNKN7MBN1WVT0L8KV8FQ/20160114_191553.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155586511-ZMVS9D9OL3P2DI68FW02/20160114_191722.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155589894-C1CRTNTVANS48368SBSW/20160114_191825.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155760295-GJS1NANUI7AG46WFBZ0R/20160114_192351.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155818685-13ONAFRA8Q6UR339QXV0/20160114_192529.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155830782-PHXJGRJ390SOICLAKLF7/20160114_192657.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155873600-UBNN0AZ1H22BEZXHD3YL/20160114_192830.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155879243-7GATH68JMFXSSKNDCRP4/20160114_193019.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155899974-85Y3R0YA2GITACBUEJ8S/20160114_194024.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155980538-TIZOR0YYW492PU559616/20160114_194141.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453155985693-6WEY1LIW5V0G78SA5EIW/20160114_194420.jpg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1453156028920-XD1O268IV2JJCSL5EOLV/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Z-Dimension or Centre Height: A Guide to Finding the Correct Window Height for Your Cuvettes</image:title>
      <image:caption>The 15mm z-dimension test is represented by the green line and the 8.5mm z-dimension is represented by the blue line. Looks like we're dealing with a machine that has a 15mm z-dimension!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/1/14/what-is-a-cuvette-cuvette-glove-guide</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-14</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452793380435-AGLJUZ63XKC07FLLNPTU/what+is+cuvette</image:loc>
      <image:title>Firefly Sci News - What is a Cuvette – Cuvette Glove Guide</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452793418782-6F7I5ML2M1W1ATWGR4VM/what+is+cuvette</image:loc>
      <image:title>Firefly Sci News - What is a Cuvette – Cuvette Glove Guide</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/december-customer-of-month</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-06</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2016/1/5/quartz-cuvette-captain-quartz</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-05</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452023998107-W48C2UXF81ODWY7TCE8V/quartz+cuvette</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Captain Quartz</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/12/18/fireflysci-show-honest-differences-on-liquid-solid-spectrophotometer-calibration-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-16</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/12/3/5-benefits-of-a-didymium-filter-made-from-didymium-glass</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1449166356488-0FCI2OK4K8UMQQEH2DSJ/image-asset.gif</image:loc>
      <image:title>Firefly Sci News - 5 Benefits of A Didymium filter Made from Didymium Glass</image:title>
      <image:caption>Don't overhead smash that standard!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/25/define-cuvette-i-wonder-what-this-article-could-be-about</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-11-25</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1448475518118-36B5ARVKLGWRGZZ4P0V9/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Define Cuvette – I Wonder What this Article Could Be About</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/18/what-is-stray-light-and-how-to-test-for-it</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1447873998469-EVTBRAFHLZQDRSG8M1YM/stray+light+fireflysci</image:loc>
      <image:title>Firefly Sci News - What is Stray Light and How to Test for it</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/12/a-quartz-cell-a-beatnik-and-a-hippie-walk-into-a-bar</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-11-12</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1447364391467-3DNTT5EPLG9CI5WTG22Y/quartz+cell</image:loc>
      <image:title>Firefly Sci News - A Quartz Cell, a Beatnik, and a Hippie Walk Into a Bar</image:title>
      <image:caption>Bam bam bam, cuvettes.... can you dig it man?</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/10/how-to-calibrate-a-spectrophotometer-part-1</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1447183257163-1KB68I09V9NJPQ3H2ADK/how+to+calibrate+a+spectrophotometer</image:loc>
      <image:title>Firefly Sci News - How To Calibrate a Spectrophotometer - Part 1</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/9/going-above-and-beyond-for-a-cuvette-washer</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-11-10</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1447103882654-UFZDSV1MX370T1WZ47UB/cuvette+washer</image:loc>
      <image:title>Firefly Sci News - Going Above and Beyond For a Cuvette Washer</image:title>
      <image:caption>No way that cuvette is going to fit in there..... or is there?</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1447104395332-C3IOD892KU322RYI4XZC/modified+cuvette+washer</image:loc>
      <image:title>Firefly Sci News - Going Above and Beyond For a Cuvette Washer</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/29/material-breakdown-for-all-fireflysci-cuvettes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2023-02-17</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446161956058-8UZ5KZW9M2ALZCY2YN15/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Material Breakdown for All FireflySci Cuvettes</image:title>
      <image:caption>Source: Knight Optical- http://www.knightoptical.co.uk</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446568592432-C57Q4M9E1IBV3WWZQYUK/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Material Breakdown for All FireflySci Cuvettes</image:title>
      <image:caption>Source: Esco Optics- http://www.escooptics.com</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446586943486-7ZVWJCQ7I8ZZCXQNH1TX/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Material Breakdown for All FireflySci Cuvettes</image:title>
      <image:caption>UV Quartz (a.k.a. Suprasil 3001) transmission range of 190-2,500nm</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446666403634-15169SHEQKSXDPPRVD58/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Material Breakdown for All FireflySci Cuvettes</image:title>
      <image:caption>IR Quartz (A.K.A.Suprasil 300) Transmission range of 220-3,500nm</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446235924217-5ELDI2ENMOXRDTYGU2DP/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Material Breakdown for All FireflySci Cuvettes</image:title>
      <image:caption>Sapphire transmission range of 250-5,000nm</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/11/2/cuvette-customer-of-the-month-october-2015</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-11-02</lastmod>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/29/how-to-tell-the-difference-between-a-quartz-and-glass-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-11-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446148279758-J8VRVFA6WPOH0WQQH6KC/glass+cuvette</image:loc>
      <image:title>Firefly Sci News - How to Tell the Difference Between a Quartz and Glass Cuvette?</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2017/11/17/hvordan-velge-kyvetter-for-uv-vis-mlinger-og-kyvettematerialeguide</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2017-11-17</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510927160096-SZMYKB22J1UNAZU8NV2G/cuvettes%2Bfor%2Buv%2Bvis.jpg</image:loc>
      <image:title>Firefly Sci News - Hvordan velge kyvetter for UV VIS-målinger og kyvettematerialeguide</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510927195312-5Z36ZW38KKG31YHEZ4WP/cuvette%2Bmaterial.jpg</image:loc>
      <image:title>Firefly Sci News - Hvordan velge kyvetter for UV VIS-målinger og kyvettematerialeguide</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/30/a-visit-from-bruce-lee</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-30</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446218044028-07GW4CVK53MD68SS2Q3Q/fireflysci+cuvette</image:loc>
      <image:title>Firefly Sci News - A visit from Bruce Lee</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/29/lab-safety-when-using-a-uv-cell</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-29</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446130549685-8SO5YVQ2PL84673VHW9D/uv+cell</image:loc>
      <image:title>Firefly Sci News - Lab Safety When Using a UV Cell</image:title>
      <image:caption>Ayyyy! Don't forget those goggles!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446131475984-IB4Z1FTOIG6Q24IA3SXA/uv+cell+cuvette+safety</image:loc>
      <image:title>Firefly Sci News - Lab Safety When Using a UV Cell</image:title>
      <image:caption>Watch out!!</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/24/nist-traceable-reference-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-04-14</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1445886296789-98I70TTRQ72HYGHHHYBA/nist+traceable</image:loc>
      <image:title>Firefly Sci News - NIST Traceable Reference Standards</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1445699961300-4LLIVRTQ98FVS2IG4CG9/nist+traceable</image:loc>
      <image:title>Firefly Sci News - NIST Traceable Reference Standards</image:title>
      <image:caption>A snippet from a FireflySci calibration report done for our FUV-Series at our benchmark facility Metrology Laboratory</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/10/14/enter-to-be-fireflyscis-cuvette-customer-of-the-month</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-14</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1444853815391-0QVLMDP743EZ2FIRYBI4/cuvette</image:loc>
      <image:title>Firefly Sci News - Enter to Be FireflySci's Cuvette Customer of the Month!</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/9/17/quartz-cuvette-tips-and-tricks</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-06-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1442514561412-6VCQM9FL93X53BK17QG0/quartz+cuvette+cleaning</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Tips and Tricks</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1442514476405-6RY1T3B5801ND3G2F37G/quartz+cuvette</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Tips and Tricks</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1442515013381-QPWV8RV0WLVUWQGT8CS6/quartz+cuvette+pipette</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Tips and Tricks</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1442514613504-2U1Y0TXC0DJFISDX826O/quartz+cuvette+pipette</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Tips and Tricks</image:title>
      <image:caption>Best way to fill a cuvette with a cuvette rack and a transfer pipette.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/9/8/cuvette-path-length</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-09-17</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441762240800-AIC9NGRSCQ4NJ9ZIBT0T/cuvette+path+length</image:loc>
      <image:title>Firefly Sci News - Cuvette Path Length</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441762331035-SNI0BBX8J1856BEG4LM0/pathlength+of+cuvette</image:loc>
      <image:title>Firefly Sci News - Cuvette Path Length</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441762076936-DDACH1ZLGPGE7QOACX8C/dual+cuvette+path+length</image:loc>
      <image:title>Firefly Sci News - Cuvette Path Length</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/9/2/fireflysci-uv-calibration-using-fuv-1d-spectrophotometer-calibration-filter</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2016-01-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441220621451-ZS3VJXT7XI2QRI6JFBDC/uv+calibration</image:loc>
      <image:title>Firefly Sci News - FireflySci UV Calibration Using FUV-1D Spectrophotometer Calibration Filter</image:title>
      <image:caption>Yes this has nothing to do with calibration standards, but it's funny =).</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/8/19/fireflyscis-top-10-reasons-why-you-need-a-cuvette-rack</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1440016720485-SYH1Y3553QCWPKGBPKJK/fireflysci+cuvette+rack</image:loc>
      <image:title>Firefly Sci News - FireflySci’s Top 10 Reasons Why You Need a Cuvette Rack</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1440016806930-9IROM0HG034YGIYDHFA3/spilled+cuvette</image:loc>
      <image:title>Firefly Sci News - FireflySci’s Top 10 Reasons Why You Need a Cuvette Rack</image:title>
      <image:caption>Oh no!!!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1440016888450-ISL0427RZYQLCON3SYVM/p66+cuvette+racks</image:loc>
      <image:title>Firefly Sci News - FireflySci’s Top 10 Reasons Why You Need a Cuvette Rack</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1440016931063-X4IE2P7XRX2GEEX17A52/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - FireflySci’s Top 10 Reasons Why You Need a Cuvette Rack</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/8/14/what-is-a-vis-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-08-14</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1439563976256-4M6QMNIB060E3APRXE0Z/vis+cuvette</image:loc>
      <image:title>Firefly Sci News - What is a VIS Cuvette?</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/8/5/how-to-determine-cuvette-volume</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-15</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438798249473-NDBZY3OKJIVW261WTTOO/cuvette+volume</image:loc>
      <image:title>Firefly Sci News - How to Determine Cuvette Volume</image:title>
      <image:caption>Dimensional Chart For Type 1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/8/4/quartz-cuvette-cleaning-find-the-best-cleaning-for-your-application</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2019-03-28</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438711057916-OD9OGD3TQBEXWG2KBMGL/quartz+cuvette+cleaning</image:loc>
      <image:title>Firefly Sci News - Quartz Cuvette Cleaning – Find the best cleaning for your application</image:title>
      <image:caption>Note: you don't need a broom or vacuum to clean your cuvettes.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/7/29/how-to-use-a-srm-2034-holmium-oxide-filter-aka-holmium-glass</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438198686410-S8RPHSILAD3WYUU9HON0/holmium+oxide+filter+holmium+glass</image:loc>
      <image:title>Firefly Sci News - How to Use A SRM 2034 Holmium Oxide Filter A.K.A. Holmium Glass</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/7/16/can-a-uv-celluv-cuvette-be-repaired</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-07-16</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1437067349678-NQJFDB9U94K4NABSYE5T/uv+cell</image:loc>
      <image:title>Firefly Sci News - Can a UV Cell/UV Cuvette be repaired?</image:title>
      <image:caption>Let's make some cuvettes!</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1437068089908-3MKN6WAUDIP2AVP3IY2T/polished+uv+cuvette+vs+frosted+uv+cell</image:loc>
      <image:title>Firefly Sci News - Can a UV Cell/UV Cuvette be repaired?</image:title>
      <image:caption>Polished vs frosted walls</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1437065496661-2UJ1827IL3X001XM6AUA/uv+cuvette</image:loc>
      <image:title>Firefly Sci News - Can a UV Cell/UV Cuvette be repaired?</image:title>
      <image:caption>Polishing the plates</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1437065568958-L267LXBLOE5Y07VOFQQN/uv+cuvette+uv+cell</image:loc>
      <image:title>Firefly Sci News - Can a UV Cell/UV Cuvette be repaired?</image:title>
      <image:caption>Fire fusing a UV cuvette using metal jigs</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/7/6/how-to-select-cuvettes-for-uv-vis-measurements-cuvette-material-guide</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2020-03-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436214348066-ZX5J29M558Y3X94CF9H8/cuvettes+for+uv+vis</image:loc>
      <image:title>Firefly Sci News - How to Select Cuvettes for UV VIS Measurements &amp; Cuvette Material Guide</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436214171419-46MM9JPCQLP8BF0VDFZX/cuvette+material</image:loc>
      <image:title>Firefly Sci News - How to Select Cuvettes for UV VIS Measurements &amp; Cuvette Material Guide</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/7/6/custom-photomultiplier-tube-calibration-filters</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-07-06</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436197290268-U4ZGQBVXUNQIZ2HKMS3B/photomultiplier+tubes</image:loc>
      <image:title>Firefly Sci News - Custom Photomultiplier Tube Calibration Filters</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/7/2/happy-4th-from-fireflysci</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-07-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435852241756-9FTP3MXB5Z3XXGE1JKVS/image-asset.jpeg</image:loc>
      <image:title>Firefly Sci News - Happy 4th from FireflySci</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/6/29/spectrophotometer-calibration-standards-just-got-better</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-10-20</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435596902479-4QK8YAHQIGP39J22TN9F/Spectrophotometer+Calibration+standards</image:loc>
      <image:title>Firefly Sci News - Spectrophotometer Calibration Standards Just Got Better</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/news/2015/6/24/custom-flow-cytometry-cell-manufacturing</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2015-06-25</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435178941013-EBH092O5UFRAV0KHWVOE/flow+cytometr+cell</image:loc>
      <image:title>Firefly Sci News - Custom Flow Cytometry Cell Manufacturing</image:title>
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      <image:title>Cuvette Holders &amp; Mounts - A30 Blank for FireflySci Calibration Kits</image:title>
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  <url>
    <loc>https://www.fireflysci.com/cuvette-holders-mounts/a26-circular-dichroism-disc-mount-for-type-42</loc>
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      <image:title>Cuvette Holders &amp; Mounts - A26 Circular Dichroism Disc Mount (For Type 42)</image:title>
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  <url>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412777018508-ZY4B5TS03UAVPKFMFO62/zoom_A25-%281%2C-2%2C-5%29+small.jpg</image:loc>
      <image:title>Cuvette Holders &amp; Mounts - A25 Cuvette Spacer (For Lightpaths of 1mm, 2mm and 5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/cuvette-holders-mounts/a24-cuvette-mount-for-type-507-and-607-cuvettes</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Cuvette Holders &amp; Mounts - A24 Cuvette Mount (For Type 507 and 607 Cuvettes)</image:title>
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    <image:image>
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      <image:title>Cuvette Holders &amp; Mounts - A24 Cuvette Mount (For Type 507 and 607 Cuvettes)</image:title>
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      <image:title>Cuvette Holders &amp; Mounts - A24 Cuvette Mount (For Type 507 and 607 Cuvettes)</image:title>
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  <url>
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      <image:title>Cuvette Holders &amp; Mounts - A23 Cuvette Mount (For Type 4 Cuvettes)</image:title>
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      <image:title>Cuvette Holders &amp; Mounts - A23 Cuvette Mount (For Type 4 Cuvettes)</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452621338777-TKPG4BG73IA0VO4DNBPU/4UV5X5X45withA23-FF.jpg</image:loc>
      <image:title>Cuvette Holders &amp; Mounts - A23 Cuvette Mount (For Type 4 Cuvettes)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/cuvette-holders-mounts/a20-series-cuvette-mounts-for-lightpaths-below-5mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418665390948-2V7U069PYIMT6NWNGC44/A20.jpg</image:loc>
      <image:title>Cuvette Holders &amp; Mounts - A20 Series: Cuvette Mounts (For Lightpaths Below 5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/cuvette-spacers</loc>
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    <priority>0.75</priority>
    <lastmod>2015-11-05</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435373921426-FSVGR4URF3LQT8ZWYN5Y/T-527.jpg</image:loc>
      <image:title>Cuvette Inserts</image:title>
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  <url>
    <loc>https://www.fireflysci.com/cuvette-spacers/type527</loc>
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    <lastmod>2021-02-18</lastmod>
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      <image:title>Cuvette Inserts - Type 527 Volume and Lightpath-Reducing Quartz Inserts</image:title>
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      <image:title>Cuvette Inserts - Type 527 Volume and Lightpath-Reducing Quartz Inserts</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes</loc>
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    <lastmod>2016-03-22</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429117631789-UUEXWE3EL2J26UBHV0PG/9UV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-9m-semi-micro-black-cuvette-with-ptfe-cover-lightpaths-5-100mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418314824736-XGH8Q3DFZ8QOSGXN5HO5/9MUV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9M Semi-Micro Black Cuvette with PTFE Cover (Lightpaths: 5-100mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-9p-semi-micro-disposable-cuvettes</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318795163-FSCWZX4SODTIEVXP1O83/9PMMA.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9P Semi-Micro Disposable Cuvettes</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081353002-TV7UIC4G64GG9HZSVWGA/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9P Semi-Micro Disposable Cuvettes</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-505-semi-micro-cuvette-with-graded-seal-tube-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418406635558-W9V67J883FN6701NBL5O/505UV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 505 Semi-Micro Cuvette with Graded Seal Tube (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-502m</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1410809294605-FHVA3DOQ67RI60SPN0WU/502MUV10A.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 502M Semi-Micro Black Flow Through Cell (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-46-semi-micro-cuvette-with-screw-cap-lightpaths-10x1-10x5mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418404315290-HF8BT0KC2XMEYW9TM16O/46UV10X4-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 46 Semi-Micro Cuvette with Screw Cap (Lightpaths: 10x1-10x5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-44-semi-micro-flow-through-cell-with-detachable-tubes-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418405974849-TPN3KMFMUSISLYCHCQ07/44UV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 44 Semi-Micro Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-29m-semi-micro-black-cuvette-with-ptfe-stopper-lightpaths-5-50mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438191560270-SV992ULFC1E73KMCR0G3/30BMUV10.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 29M Semi-Micro Black Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458323862242-BN2YNVKIBFCIVTTIG746/29MUV40-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 29M Semi-Micro Black Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-29bm-semi-micro-raised-bottom-cuvette-with-ptfe-cover-lightpaths-5-40mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438191546072-SQ06RU3YZ47UT1I85NT6/29BMUV10.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 29BM Semi-Micro Raised-Bottom Cuvette with PTFE Cover (Lightpaths: 5-40mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-29-semi-micro-cuvette-with-ptfe-stopper-lightpaths-5-50mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418404532967-3RE8L94149M4D4OIARZR/29UV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 29 Semi-Micro Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-9bm-semi-micro-raised-bottom-black-cuvette-with-ptfe-cover-lightpaths-10x1-10x5mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418415806793-HHCRWSL0QEJCQHM12GEJ/9BRUV10X3-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9BM Semi-Micro Raised-Bottom Black Cuvette with PTFE Cover (Lightpaths: 10x1-10x5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-9b-semi-micro-raised-bottom-cuvette-with-ptfe-cover-lightpaths-10x1-10x5mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418669322396-F3WMX56G229EP39FRHMX/9RUV10X5-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9B Semi-Micro Raised-Bottom Cuvette with PTFE Cover (Lightpaths: 10x1-10x5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/semi-micro-spectrophotometer-cuvettes/type-9-semi-micro-cuvette</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418335992953-2Z5N0HOKU1CR4PPPO3ZY/9UV10-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9 Semi-Micro Cuvette with PTFE Cover (Lightpaths 5-100mm)</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456771139275-4GBMZ365LGPKTTTF57U5/9UV50-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9 Semi-Micro Cuvette with PTFE Cover (Lightpaths 5-100mm)</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458320337733-KW762ZOV50L9FKORXA8R/9UV5-FF.jpg</image:loc>
      <image:title>Semi-Micro Cuvettes - Type 9 Semi-Micro Cuvette with PTFE Cover (Lightpaths 5-100mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes</loc>
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    <priority>0.75</priority>
    <lastmod>2019-05-14</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429117865512-Q0HROW6LXX4OM1FBO3HR/18RUV10-FF.jpg</image:loc>
      <image:title>Micro Cuvettes</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type18ms-micro-magnetic-cuvette</loc>
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    <priority>0.5</priority>
    <lastmod>2022-04-05</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1557851987437-APXL48OHF85RZ7Q4BMGX/18MSUV10-FF.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 18MS Micro Cuvette with PTFE Cover and Magnetic Stirrer Slot (Lightpath: 10mm)</image:title>
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    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-59m-micro-black-flow-through-cell-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426621426980-BXXV2DGHFZG57ACQIED3/59MUV10.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 59M Micro Black Flow Through Cell (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-30bm-micro-raised-bottom-black-cuvette-with-ptfe-stopper-lightpaths-5-20mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438199018890-FXYHBNYKQMDIJO1RP1NA/30BMUV10.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 30BM Micro Raised-Bottom Black Cuvette with PTFE Stopper (Lightpaths: 5-20mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-74-micro-flow-through-cell-lightpath-2mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426894963843-YDZY8SV6KW7U787DX87Q/74UV2.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 74 Micro Flow Through Cell (Lightpath: 2mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-520m-short-micro-black-cuvette-with-ptfe-stopper-lightpaths-5-20mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1410901052608-S7ENRPUKIUAUE0I8GLTE/T-520m.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 520M Short Micro Black Cuvette with PTFE Stopper (Lightpaths: 5-20mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-30m-micro-black-cuvette-with-ptfe-stopper-lightpaths-5-40mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418416168076-W2O6AUA4BZOVIQ6IKF25/30MUV10-FF.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 30M Micro Black Cuvette with PTFE Stopper (Lightpaths: 5-40mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/micro-spectrophotometer-cuvettes/type-30-standard-micro-cuvette-with-ptfe-stopper-lightpaths-1-50mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-02-24</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418416406060-MMF93AP0XXFQ0ONO2DP4/30UV10-FF.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 30 Standard Micro Cuvette with PTFE Stopper (Lightpaths: 1-50mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458320938788-9O1X3OOACOMJ37QX3FAZ/30UV2-FF.jpg</image:loc>
      <image:title>Micro Cuvettes - Type 30 Standard Micro Cuvette with PTFE Stopper (Lightpaths: 1-50mm)</image:title>
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      <image:title>Micro Cuvettes - Type 18M Micro Black Cuvette with PTFE Cover (Lightpaths: 5-50mm)</image:title>
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      <image:title>Micro Cuvettes - Type 18BM Micro Raised-Bottom Black Cuvette with PTFE Cover (Lightpaths: 5-20mm)</image:title>
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      <image:title>Micro Cuvettes - Type 18B Micro Raised-Bottom Cuvette with PTFE Cover (Lightpaths: 5-50mm)</image:title>
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      <image:title>Micro Cuvettes - Type 18 Standard Micro Cuvette with PTFE Cover (Lightpaths: 5-100mm)</image:title>
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  <url>
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      <image:title>Micro Cuvettes - Type 17 Short Micro Cuvette with PTFE Cover (Lightpaths: 5-50mm)</image:title>
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  <url>
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  <url>
    <loc>https://www.fireflysci.com/ultra-micro-spectrophotometer-cuvettes</loc>
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      <image:title>Ultra-Micro Cuvettes - Micro Focus Cell (1.9µl)- Micro Drop Spectrophotometer Conversion Kit</image:title>
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      <image:title>Ultra-Micro Cuvettes - Micro Focus Cell (1.9µl)- Micro Drop Spectrophotometer Conversion Kit</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes - Type 32S Cylindrical Polarimeter Cell with Screw Cap (Lightpaths: 10-20mm)</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes - Type 46 Semi-Micro Cuvette with Screw Cap (Lightpaths: 10x1-10x5mm)</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes - Type 41 Macro Cuvette with Screw Cap (Lightpaths: 1-100mm)</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes - Type 41 Macro Cuvette with Screw Cap (Lightpaths: 1-100mm)</image:title>
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      <image:title>Screw Cap Spectrophotometer Cuvettes - Type 34S Large Cylindrical Polarimeter Cell with Screw Caps (Lightpaths: 50-100mm)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-609-sub-micro-tablet-dissolution-cell-with-ptfe-tubing-and-3mm-circular-window-capacities-195-390l-swb68</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 609 Sub-Micro Tablet Dissolution Cell with PTFE Tubing and 3mm Circular Window (Capacities: 195-390µl)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-55-microscope-flow-through-cell-lightpaths-02-5mm</loc>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-74-micro-flow-through-cell-lightpath-2mm</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 606 Sub-Micro Tablet Dissolution Cell with PTFE Tubing and 3.5x11mm Window (Capacities: 195-390µl)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-605-sub-micro-tablet-dissolution-cell-with-ptfe-tubing-and-35x175mm-window-capacities-62-124l</loc>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-602-sub-micro-tablet-dissolution-cell-with-ptfe-tubing-and-2x8mm-window-capacity-160l</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 602 Sub-Micro Tablet Dissolution Cell with PTFE Tubing and 2x8mm Window (Capacity: 160µl)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-601-sub-micro-tablet-dissolution-cell-with-ptfe-tubing-and-2x5mm-window-capacities-10-100l</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 601 Sub-Micro Tablet Dissolution Cell with PTFE Tubing and 2x5mm Window (Capacities: 10-100µl)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-78-electrophoresis-cuvette-lightpath-2mm</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 78 Electrophoresis Flow Through Cell (Lightpath: 2mm)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-59m-micro-black-flow-through-cell-lightpath-10mm</loc>
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  <url>
    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-49-micro-demountable-flow-through-cell-lightpaths-05-1mm</loc>
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      <image:title>Flow Through Spectrophotometer Cells - Type 49 Micro Demountable Flow Through Cell (Lightpaths: 0.05-2mm)</image:title>
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    <loc>https://www.fireflysci.com/flow-through-spectrophotometer-cells/type-48-flow-through-cell-with-side-tubes-lightpaths-005-10mm</loc>
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      <image:title>Cylindrical Spectrophotometer Cells - Type 32 Standard Cylindrical Polarimeter Cell with PTFE Stopper (Lightpaths: 1-20mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452035779789-73NHDF571HUDHROP4K99/32UV2-FF.jpg</image:loc>
      <image:title>Cylindrical Spectrophotometer Cells - Type 32 Standard Cylindrical Polarimeter Cell with PTFE Stopper (Lightpaths: 1-20mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452036354112-XQLS8U8VJS3CWIEYJZQ8/32UV20-FF.jpg</image:loc>
      <image:title>Cylindrical Spectrophotometer Cells - Type 32 Standard Cylindrical Polarimeter Cell with PTFE Stopper (Lightpaths: 1-20mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-01-13</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429119427852-8D0OUZJGDKYC1Q0TIMDD/61UV10-FF.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube/type-62-macro-fluorescence-cuvette-with-straight-bore-tube-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441234620761-XA7LD5Q6OAK7AEH8QK2P/62UV10-FF.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 62 Macro Spectrophotometer Cuvette with Straight Bore Tube (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube/type-505-semi-micro-cuvette-with-graded-seal-tube-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418421013075-JKDHLM19DY52U41AOK5C/505UV10-FF.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 505 Semi-Micro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube/type-504-gas-absorption-cell-with-graded-seal-tube-lightpath-74mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465435820063-9KILGS8IAPSZR90SLEI3/504UV74-FF.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 504 Gas Absorption Cell with Quartz-to-Glass Graded Seal Tube (Lightpath: 74mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411668491204-JL78L0YN7VP5Z3OH1MDQ/T-504.gif</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 504 Gas Absorption Cell with Quartz-to-Glass Graded Seal Tube (Lightpath: 74mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube/type-61-macro-cuvette-with-graded-seal-tube-lightpaths-05-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418420998452-TFKENZB60RYG63GDAO1C/61UV10-FF.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434405520794-06P57LSJRU9E18X4D919/61UV1.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434405521181-3DSF0VJGPTVYH85TGI2M/61UV5.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/spectrophotometer-cuvettes-with-graded-seal-tube/type-37-cylindrical-cell-with-graded-seal-tube-lightpaths-1-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426628889360-JIUJAWYCNOUQ7GQB9EBZ/37G1-FFS.jpg</image:loc>
      <image:title>Spectrophotometer Cuvettes with Graded Seal Tube - Type 37 Cylindrical Cell with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 1-100mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/cryogenic-spectrophotometer-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2017-02-27</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429119558108-PH3VPSUAUXT1W6E1HQWA/64UV10.jpg</image:loc>
      <image:title>Cryogenic Spectrophotometer Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/cryogenic-spectrophotometer-cuvettes/type-66-macro-cryogenic-cuvette-with-screw-cap-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1488223801223-WIPULLLNGWOWXI8FWURB/41UV10-FF.jpg</image:loc>
      <image:title>Cryogenic Spectrophotometer Cuvettes - Type 66 Macro Cryogenic Cuvette with Screw Cap (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/cryogenic-spectrophotometer-cuvettes/type-65-cryogenic-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426627587471-57TRMC3C45D3FTAJC69L/65UV10.jpg</image:loc>
      <image:title>Cryogenic Spectrophotometer Cuvettes - Type 65 Cryogenic Cuvette with PTFE Stopper (Lightpath: 1-10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/cryogenic-spectrophotometer-cuvettes/type-64-cryogenic-cuvette-with-ptfe-cover-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426908179227-E5XV8ZEWQDKZAVIMGPWN/64UV10.jpg</image:loc>
      <image:title>Cryogenic Spectrophotometer Cuvettes - Type 64 Cryogenic Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/anaerobic-spectrophotometer-cells-with-glass-pouch</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-01-11</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429119663725-5BE6IRSTS8YTM87H45IR/26UV10.jpg</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/anaerobic-spectrophotometer-cells-with-glass-pouch/type-28-standard-anaerobic-absorbance-cell-with-glass-pouch-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1450828341648-COUYLMYGEVDYZN2819FK/28UV10-FF.jpg</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch - Type 28 Standard Anaerobic Absorbance Cell with Glass Pouch (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/anaerobic-spectrophotometer-cells-with-glass-pouch/type-71-macro-anaerobic-cuvette-with-glass-pouch-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426334981227-4NNYGV9OCLCSDYYT3ICP/71FLUV10-FF.jpg</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch - Type 71 Macro Anaerobic Cuvette with Glass Pouch (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/anaerobic-spectrophotometer-cells-with-glass-pouch/type-26-short-anaerobic-cell-with-glass-pouch-lightpaths-2-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426622723334-7V74N22CVZB3GJJBEKEX/26UV10.jpg</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch - Type 26 Short Anaerobic Cell with Glass Pouch (Lightpaths: 2-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411670430911-TXJA9K83WHJUFVZ2RV9Q/T-26.gif</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch - Type 26 Short Anaerobic Cell with Glass Pouch (Lightpaths: 2-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1467216933307-2L4P4HMUPWG7TJ9QCOO0/Biochemical+Journal-+26G10.jpg</image:loc>
      <image:title>Anaerobic Cells with Spectrophotometer Glass Pouch - Type 26 Short Anaerobic Cell with Glass Pouch (Lightpaths: 2-10mm) - Biochemical Journal</image:title>
      <image:caption>Read on page 138 for our 26G10 cuvette in action.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/tandem-divided-spectrophotometer-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2019-01-07</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429119775756-8QGY1W2FAMS1VMJ4SVA7/25AUV10.jpg</image:loc>
      <image:title>Tandem/Divided Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/tandem-divided-spectrophotometer-cuvettes/type-515a-tandem-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1440617543247-9RVXVNECI5DZZYOPQWEW/515AUV10.jpg</image:loc>
      <image:title>Tandem/Divided Cuvettes - Type 515A Tandem Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411672130286-5A2GYJJJ4QM0B516S02O/T-515A.gif</image:loc>
      <image:title>Tandem/Divided Cuvettes - Type 515A Tandem Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/tandem-divided-spectrophotometer-cuvettes/type-25a-tandem-cuvette-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426628426352-CRBEZO8HZNDLBDKSFKGN/25AUV10.jpg</image:loc>
      <image:title>Tandem/Divided Cuvettes - Type 25A Tandem Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-01-07</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120045995-9ATZDCIPK0P46V01GV0V/50UV10.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes/type-54-water-jacketed-cell-with-ptfe-cover-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411673540377-2HYULQDEQR29B6EFVE4P/T-54.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 54 Water Jacketed Cell with Front-Facing Tubes and PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411673549950-F26FJXAWRSWZRS9J1H96/T-54.gif</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 54 Water Jacketed Cell with Front-Facing Tubes and PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes/type-53-water-jacketed-cell-with-ptfe-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426630559477-XUX07LAQ2KPHO7P7BHU2/53UV10.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 53 Water Jacketed Cell with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411673404312-CLO0UDQPR3GZB1FWVB3Y/T-53.gif</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 53 Water Jacketed Cell with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes/type-51v-water-jacketed-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426630362277-NV3HFC8Z4TCQA4SR1ZAO/51VUV10.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 51V Water Jacketed Cell with Vertical Tubes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411673304671-B9RKHYO8LWN7PQGSTGHJ/T-51V.gif</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 51V Water Jacketed Cell with Vertical Tubes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes/type-51h-water-jacketed-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411672721819-A3J80WHJU7459ZT4JD3B/T-51h.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 51H Water Jacketed Cell with Horizontal Tubes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1411672618835-CRQZW8CJYKU7WBMAD1ZA/T-51H.gif</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 51H Water Jacketed Cell with Horizontal Tubes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/water-jacketed-spectrophotometer-cuvettes/type-50-water-jacketed-cylindrical-polarimeter-cell-with-ptfe-stopper-lightpaths-5-50mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426628463741-VKESDWAOCW28N86YO4U7/50UV10.jpg</image:loc>
      <image:title>Water Jacketed Spectrophotometer Cuvettes - Type 50 Water Jacketed Cylindrical Polarimeter Cell with PTFE Stopper (Lightpaths: 5-100mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2019-01-07</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120136330-88OFPGF2ZT2ZS1F0G2SW/1PS.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/electroporation-cuvettes-type-704p</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434565221557-L9UAETOQPH63MPTOLBY6/Electroporation+Cuvettes-FF.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 704P Disposable Electroporation Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/type-21p-disposable-macro-cuvettes-with-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1432841427777-C0SIZLJMS10MD3W4YL4I/21PS.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 21P Disposable Macro Cuvettes with Stoppers (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081180827-83QW6ATLY4OPINB4M8J9/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 21P Disposable Macro Cuvettes with Stoppers (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/uekjnmmviovah7f0tlh7q3r0z616cf</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1432840844233-TR5UVN6USE5S2AH90NIJ/509PS.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 509P Disposable 100mm Tall Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081158173-GNAMR0P24KWDR48KBLSK/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 509P Disposable 100mm Tall Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/type-700-disposable-sub-micro-cuvettes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1421428893941-LQU9ILAJRS7XS5IDDHRY/Type%2B700.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 700P Disposable Sub-Micro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081205402-7L9313BFUUSKYGVHGBU6/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 700P Disposable Sub-Micro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/type-9p-semi-micro-disposable-cuvettes</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318828663-KF2EYL1ZMW7S95TAPUJR/9PMMA.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 9P Semi-Micro Disposable Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081124214-S7HAS3IHUPND92V2B6JD/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 9P Semi-Micro Disposable Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-spectrophotometer-cuvettes/type-1p-disposable-macro-cuvettes-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318819985-FN78EYE7OSN3J17TUXUT/1PS.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 1P Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081073513-96LLA94WIID860Y6BUUO/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Spectrophotometer Cuvettes - Type 1P Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-04-19</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120807891-K4W4WZR3G7F5VHA7DQCB/3UV10-%2BFF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-1flp-disposable-macro-cuvettes-lightpath-10mm-1</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318842183-HU7WW9PDPP0DFX6KCRPT/3PMMA.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FLP Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-58fl-macro-fluorescence-flow-through-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435161162971-8DXILK0PS8H426YB26GO/58FLUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 58FL Macro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412640304073-O3F6VALAEC2T54ZNEL7V/T-57.gif</image:loc>
      <image:title>Macro Fluorescence Cells - Type 58FL Macro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-501fl-macro-fluorescence-flow-through-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418252175461-2ZBVZ9KZ89L58EXDYWAQ/501FLUV10-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 501FL Macro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-71fl-macro-anaerobic-fluorescence-cell-with-glass-pouch-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418253397413-QN951DKFYBYU4GFSAZLW/71FLUV10-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 71FL Macro Anaerobic Fluorescence Cell with Glass Pouch (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-65fl-cryogenic-fluorescence-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426634330934-C5HAFQN183KHICYAO49E/65FLUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 65FL Macro Cryogenic Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412084637513-3NXZNNYPKV12XTOCIII3/T-65FL.gif</image:loc>
      <image:title>Macro Fluorescence Cells - Type 65FL Macro Cryogenic Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-61fl-macro-graded-seal-fluorescence-tube-cuvette-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426634039587-QH8B1EXEQAB5SIWYA77S/61FLUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 61FL Macro Quartz-to-Pyrex Graded Seal Fluorescence Tube Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412084028290-OFORSUIILCNLU6MGV34F/T-63.gif</image:loc>
      <image:title>Macro Fluorescence Cells - Type 61FL Macro Quartz-to-Pyrex Graded Seal Fluorescence Tube Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-45fl-macro-fluorescence-flow-through-cell-with-detachable-tubes-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426633588564-SOVGA0WZD0B4A05FSMXR/45FLUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 45FL Macro Fluorescence Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412083891815-7M0NJ5E1GP1XE0DNQJZA/T-45FL.gif</image:loc>
      <image:title>Macro Fluorescence Cells - Type 45FL Macro Fluorescence Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-41fl-macro-fluorescence-cuvette-with-screw-cap-lightpaths-5-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418252470249-991GII4ZJCV3D5SGMBQC/43UV10-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 41FL Macro Fluorescence Cuvette with Screw Cap (Lightpaths: 5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456769545787-C13MXMGMWS5AQT22WMX7/41FLUV5-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 41FL Macro Fluorescence Cuvette with Screw Cap (Lightpaths: 5-100mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-21fl-macro-fluorescence-cuvette-with-ptfe-stopper-lightpaths-5-50mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456777695823-KAM2F5JLLP61XI28732V/21FLUV5-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 21FL Macro Fluorescence Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1439237761005-7SNC6OBE09LEJJ0M1N64/21FLUV10+New+Stoppers-+FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 21FL Macro Fluorescence Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456769895011-8AVBPBQ70TP64RB8VPB2/21FLUV50-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 21FL Macro Fluorescence Cuvette with PTFE Stopper (Lightpaths: 5-50mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-11fl-macro-fluorescence-cuvette-with-quartz-cap-lightpaths-5-40mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426882974691-RCZ2BXMCW87XZBRLDL3C/11FLUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 11FL Macro Fluorescence Cuvette with Quartz Cap (Lightpaths: 5-40mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1461090929651-Q32E5JIIFXK7DQQW8ZEA/zoom_T-13.gif</image:loc>
      <image:title>Macro Fluorescence Cells - Type 11FL Macro Fluorescence Cuvette with Quartz Cap (Lightpaths: 5-40mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-3ft-macro-open-bottom-fluorescence-flow-through-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426632658361-1UHKJRRELMQWYGPQOQZF/3FTUV10.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 3FT Macro Open Bottom Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-macro-fluorescence-cuvettes/type-1fl-macro-fluorescence-cuvette-with-ptfe-cover-lightpaths-1-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452034098225-FANGAS1E94S2LDS5QFO5/3UV10-%2BFF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FL Macro Fluorescence Cuvette with PTFE Cover (Lightpaths: 1-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452033998791-XD8MCA6W5VVCHXDT1GKR/1FLUV2-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FL Macro Fluorescence Cuvette with PTFE Cover (Lightpaths: 1-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452034260124-3QE2AULNOZHRNZJZ9O4K/1FLUV5-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FL Macro Fluorescence Cuvette with PTFE Cover (Lightpaths: 1-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452034613707-0MRPW4AP4WODMX9T6R24/1FLUV50-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FL Macro Fluorescence Cuvette with PTFE Cover (Lightpaths: 1-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452034927531-E179AY9T7IIEVJJCNA3L/1FLUV100-FF.jpg</image:loc>
      <image:title>Macro Fluorescence Cells - Type 1FL Macro Fluorescence Cuvette with PTFE Cover (Lightpaths: 1-100mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-03-10</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120863193-AMW30IHZT83J277W3AS5/9FLUV10.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-9flp-semi-micro-disposable-cuvettes-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318870373-225OT0D01IKE7CD4PULP/9PMMA.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 9FLP Semi-Micro Disposable Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-552-dual-lightpath-fluorescence-cell-with-graded-seal-tube-lightpaths-10x1-10x5mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426891701173-05IUE9ODRXPJYDQSH2WB/552UV10X2.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 552 Dual Lightpath Fluorescence Cell with Graded Seal Tube (Lightpaths: 10x1-10x5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412101835684-1VRSXBVJR6BG0K0XRSZ5/T-552.gif</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 552 Dual Lightpath Fluorescence Cell with Graded Seal Tube (Lightpaths: 10x1-10x5mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-505fl-semi-micro-graded-seal-tube-fluorescence-cuvette-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426892085745-G39NFLOZCMCVZ4OMDJ2P/505FLUV10.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 505FL Semi-Micro Graded Seal Tube Fluorescence Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412101713506-TG2BPE08AU6D90MGJJNR/T-505FL.gif</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 505FL Semi-Micro Graded Seal Tube Fluorescence Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-52-dual-pathlength-fluorescence-cuvette-lightpaths-10x1-10x5mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426890720653-1RSHBTWZRFAS6JOXYTTX/52UV10X2.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 52 Dual Pathlength Fluorescence Cuvette (Lightpaths: 10x1-10x5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412101231950-1Z5R5HM09P9FBBDJ85F9/T-52.gif</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 52 Dual Pathlength Fluorescence Cuvette (Lightpaths: 10x1-10x5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1468873382418-8N3GBRZTK81RNC2SZBXI/Nucleic+Acids+Research-+52UV10X3.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 52 Dual Pathlength Fluorescence Cuvette (Lightpaths: 10x1-10x5mm) - Nucleic Acid Research</image:title>
      <image:caption>See page 2518 for our Type 52UV10X3 quartz cuvette in action.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-46fl-semi-micro-fluorescence-screw-cap-cell-lightpath-10mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426889404927-WRGV9HQQMT07GTXLR822/46FLUV10X4.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 46FL Semi-Micro Fluorescence Screw Cap Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-29fl-semi-micro-fluorescence-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426881767675-EAR9JDI7KCUCED2I7RLE/29FLUV10.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 29FL Semi-Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-semi-micro-cuvettes/type-9fl-semi-micro-fluorescence-cuvette-with-ptfe-cover-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426890924836-AXBC7YBU96ZE9EYJ0DK9/9FLUV10.jpg</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 9FL Semi-Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412085419910-J4GGPMBRC6J01AJXEDGZ/T-517.gif</image:loc>
      <image:title>Semi-Micro Fluorescence Cells - Type 9FL Semi-Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-02-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120928919-SVYT55DYFER68VKUD9SK/4UV5X5.jpg</image:loc>
      <image:title>Micro Fluorescence Cells</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-607-micro-fluorescence-cuvette-with-ptfe-stopper-lightpath-3mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426905852704-RUO1UCVKRSP4017RWISN/607UV3X3X27+stopper+in.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 607 Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 3mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426905746812-4U38JRVFEK28JW0SQHC7/607UV3X3X27.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 607 Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 3mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412188611563-DJFHOKUBG17QS88HT7YF/T-607.gif</image:loc>
      <image:title>Micro Fluorescence Cells - Type 607 Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 3mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-514m-micro-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418669061241-2YCRQ8V84BVG1A84HW8Y/514MUV10-FF.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 514M Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-507-micro-fluorescence-cuvette-with-ptfe-cover-lightpath-3mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426908697653-CT27K30Q7F64RPNNMT0A/507UV3X3X40.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 507 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 3mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452554201168-V2KCBD2IDAHI7VLPLVZO/507UV3X3X40withA20-FF.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 507 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 3mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412105627951-J5NFKFQLUOJCMAH9W6D5/T-507.gif</image:loc>
      <image:title>Micro Fluorescence Cells - Type 507 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 3mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-59fl-micro-fluorescence-flow-through-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426907221546-A4QZO937PDVYSQNR8T7M/59FLUV10.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 59FL Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412105462975-75GTX2JUPJ946S10WY6J/T-59FL.gif</image:loc>
      <image:title>Micro Fluorescence Cells - Type 59FL Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-30fl-micro-fluorescence-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426906327646-QGWS0790UQYV4NRQGPLN/30FLUV10+with+floating+stopper.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 30FL Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426906183235-I2EYMJSKQZ55A8XSF21N/30FLUV10.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 30FL Micro Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-18fl-standard-micro-fluorescence-cuvette-with-ptfe-cover-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426906069402-HT83SQYXEO8EVMLGZL7Y/18FLUV10.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 18FL Standard Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-micro-fluorescence-cuvettes/type-4-micro-fluorescence-cuvette-with-ptfe-cover-lightpath-5mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426905508923-S7N935NUOGLTQ8VBUMWJ/4UV5X5.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 4 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452623622980-EXRY5ME2ZXWUJRFP09BE/T-4.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 4 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452556107860-8TTIH2PTLVPL8350MY9T/4UV5X5X33withA23.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 4 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452622840302-0Q3QL4VBJATB328UQ7VW/4UV5X5X45withA23-FF.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 4 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 5mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1468875891694-45C9PG413WCV91W8P26P/Journal+of+Biological+Chemistry-+Type+4.jpg</image:loc>
      <image:title>Micro Fluorescence Cells - Type 4 Micro Fluorescence Cuvette with PTFE Cover (Lightpath: 5mm) - Journal of Biological Chemistry</image:title>
      <image:caption>See page 22446 for our Type 4 UV Quartz cuvette in action.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-sub-micro-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2019-01-07</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429120996535-AJ0U1G7RB7EMS76HP845/8830-FF.jpg</image:loc>
      <image:title>Sub-Micro Fluorescence Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-sub-micro-cuvettes/type-8830-hplc-sub-micro-flow-through-cell-lightpath-1mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1421189504201-NA8OGQJ1S7HTN1V4OM1G/8830-FF.jpg</image:loc>
      <image:title>Sub-Micro Fluorescence Cuvettes - Type 8830 HPLC Sub-Micro Flow Through Cell (Lightpath: 1mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426351913799-CQ4RC83L2ZG2MKIT1GSY/zoom_8830a.gif</image:loc>
      <image:title>Sub-Micro Fluorescence Cuvettes - Type 8830 HPLC Sub-Micro Flow Through Cell (Lightpath: 1mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-sub-micro-cuvettes/type-701mfl</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426906678692-EW3BY7ILEVQHF8T0OX85/701MFLUV10+with+stopper+in.jpg</image:loc>
      <image:title>Sub-Micro Fluorescence Cuvettes - Type 701MFL Sub-Micro Black Fluorometer Cuvette (Capacity: 10-160µl)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426906539066-O87KONCZ78C40ONTZ3AM/701MFLUV.jpg</image:loc>
      <image:title>Sub-Micro Fluorescence Cuvettes - Type 701MFL Sub-Micro Black Fluorometer Cuvette (Capacity: 10-160µl)</image:title>
    </image:image>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-screw-cap-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2017-02-27</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429121059006-8WJMH74FRG7FJRM1N8RZ/43UV10-FF.jpg</image:loc>
      <image:title>Screw Cap Fluorometer Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-screw-cap-cuvettes/type-46fl-semi-micro-fluorescence-screw-cap-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426889389668-L8KV5VJGHH6UO5IHPNBD/46FLUV10X4.jpg</image:loc>
      <image:title>Screw Cap Fluorometer Cuvettes - Type 46FL Semi-Micro Fluorescence Screw Cap Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-screw-cap-cuvettes/type-41fl-macro-fluorescence-cuvette-with-screw-cap-lightpaths-5-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1421186232506-5D2UNJ2CKZQLKLQEASGS/43UV10-FF.jpg</image:loc>
      <image:title>Screw Cap Fluorometer Cuvettes - Type 41FL Macro Fluorescence Cuvette with Screw Cap (Lightpaths: 5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456769591293-NW7X8C5FO3WNMTPW4ASV/41FLUV5-FF.jpg</image:loc>
      <image:title>Screw Cap Fluorometer Cuvettes - Type 41FL Macro Fluorescence Cuvette with Screw Cap (Lightpaths: 5-100mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube</loc>
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    <priority>0.75</priority>
    <lastmod>2016-01-13</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429121230285-FRDYD9BS9WCHYTWIUML9/61UV10-FF.jpg</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube/type-552-dual-lightpath-fluorescence-cell-with-graded-seal-tube-lightpaths-10x1-10x5mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426891842400-YF5R02RO15N1YNU61NAB/552UV10X2.jpg</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 552 Dual Lightpath Quartz-to-Pyrex Fluorescence Cell with Graded Seal Tube (Lightpaths: 10x1-10x5mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412633439231-7M6T5OXWQL9EGTC3AE7N/T-552.gif</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 552 Dual Lightpath Quartz-to-Pyrex Fluorescence Cell with Graded Seal Tube (Lightpaths: 10x1-10x5mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube/type-505fl-semi-micro-graded-seal-tube-fluorescence-cuvette-lightpath-10mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426892036571-PQ6E4YGVEELPHL5XYRIZ/505FLUV10.jpg</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 505FL Semi-Micro Quartz-to-Pyrex Graded Seal Tube Fluorescence Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412633420315-UEGSQ27GEIHIE36G6823/T-505FL.gif</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 505FL Semi-Micro Quartz-to-Pyrex Graded Seal Tube Fluorescence Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube/type-61fl-macro-graded-seal-fluorescence-tube-cuvette-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426634589748-UX2IF4CN9U3SPVFVSU30/61FLUV10.jpg</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 61FL Macro Quartz-to-Pyrex Graded Seal Fluorescence Tube Cuvette (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412633280586-YZPI9PEGDQ9Q7KX8TIPK/T-63.gif</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 61FL Macro Quartz-to-Pyrex Graded Seal Fluorescence Tube Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube/type-62fl-macro-fluorescence-cuvette-with-quartz-tube-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441235003707-9V6YX7T82ZEPQTZ8KVIG/62FLUV10-FF.jpg</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 62FL Macro Fluorescence Cuvette with Straight Bore Tube (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cuvettes-with-graded-seal-tube/type-60-fluorescence-cube-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412193175460-0VHU88U44XA49VL6TKWR/Type+60.gif</image:loc>
      <image:title>Cuvettes with Fluorometer Graded Seal Tube - Type 60 Fluorescence Cube Cell (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2019-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429121848478-HH6JYGL67RYKHAQGN17Q/59FLUV10.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-74fl-micro-fluorescence-flow-through-cell-lightpath-2mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
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      <image:title>Flow Through Fluorescence Cells - Type 74FL Micro Fluorescence Flow Through Cell (Lightpath: 2mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1467149800945-5BTVB5JXRZN5P46NAZF9/Applied+Optics-+74UV2.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 74FL Micro Fluorescence Flow Through Cell (Lightpath: 2mm) - Applied Optics- December 1984</image:title>
      <image:caption>Our Type 74FLUV2 (formerly 506UV2) used in a dye laser application.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-603fl-uv-quartz-fluorescence-tablet-dissolution-cell-40-440l</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435084024474-SCANI59AUNHKXARSZUMC/602UV10B.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 603FL UV Quartz Fluorescence Tablet Dissolution Cell  (11-440μl)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-608fl-hplc-uv-quartz-flow-cell-capacities-11-100l</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Flow Through Fluorescence Cells - Type 608FL HPLC UV Quartz Flow Cell (Capacities: 11-100µl)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435082482452-9UY6PHL2TEWWVFZZ25VQ/Type+608FL.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 608FL HPLC UV Quartz Flow Cell (Capacities: 11-100µl)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-601fl-sub-micro-tablet-dissolution-fluorescence-cell-with-ptfe-tubing-and-2x5mm-window-capacities-10-100l</loc>
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    <lastmod>2025-01-14</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1435083755321-O6UFCRU0VA4272SSHY4T/602UV10B.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 601FL Sub-Micro Tablet Dissolution Fluorescence Cell with PTFE Tubing and 2x5mm Window (Capacities: 10-100µl)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-8830-micro-flow-through-cell-lightpath-250-microns</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Flow Through Fluorescence Cells - Type 8830 HPLC Sub-Micro Flow Through Cell (Lightpath: 1mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-58fl-macro-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Flow Through Fluorescence Cells - Type 58FL Macro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1461096410507-D2YKLNT1KXEJ5QNL3VR4/T-57.gif</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 58FL Macro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-514m-micro-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:title>Flow Through Fluorescence Cells - Type 514M Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-59fl-micro-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426907258432-7ETHOPLXJ1ZP949QIY15/59FLUV10.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 59FL Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412639789829-SQUXSTG7EI41PFHEDG9S/T-59FL.gif</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 59FL Micro Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-501fl-macro-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Flow Through Fluorescence Cells - Type 501FL Macro Fluorescence Flow Through Cell (Lightpaths: 0.5-10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-45fl-macro-fluorescence-flow-through-cell-with-detachable-tubes-lightpath-10mm</loc>
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      <image:title>Flow Through Fluorescence Cells - Type 45FL Macro Fluorescence Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412639767062-DXZC70X1CKQ26F27SKM9/T-45FL.gif</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 45FL Macro Fluorescence Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-flow-through-cells/type-3ft-macro-open-bottom-fluorescence-flow-through-cell-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426634605901-NLI0R7D318PNGJGF95SA/3FTUV10.jpg</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 3FT Macro Open Bottom Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1461096173735-1YLUP762M1NTATUUIKER/T-3FT.gif</image:loc>
      <image:title>Flow Through Fluorescence Cells - Type 3FT Macro Open Bottom Fluorescence Flow Through Cell (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells</loc>
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    <priority>0.75</priority>
    <lastmod>2019-04-09</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429121920219-UVFF82ACWFDEQPGRK667/76UV.jpg</image:loc>
      <image:title>Light Scattering and Turbidity Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-73-spectronic-test-tube-cuvette-lightpath-10mm</loc>
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    <lastmod>2020-08-14</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1554831982052-A9QFF0D371GSKPRFI2NY/73UV10-FF.jpg</image:loc>
      <image:title>Light Scattering and Turbidity Cells - Type 73 Spectronic Test Tube Cuvette (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-72-reflection-based-light-scattering-cell</loc>
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    <lastmod>2026-02-10</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1473882426712-FOWR8RQWH1YL3DN99Y5Y/72UV60-FF.jpg</image:loc>
      <image:title>Light Scattering and Turbidity Cells - Type 72 Reflection-Based Light Scattering Cell (Lightpath: 31.6-60.6mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-528-raman-spectroscopy-cell</loc>
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    <lastmod>2026-02-28</lastmod>
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      <image:title>Light Scattering and Turbidity Cells - Type 528 Raman Spectroscopy Cell</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412641887475-ZUCNTW9TV2Z2ZZ7ATN71/T-528.gif</image:loc>
      <image:title>Light Scattering and Turbidity Cells - Type 528 Raman Spectroscopy Cell</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-79-turbidity-measurement-cell-lightpath-25mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412641689764-B1X05WK59YGKYWO736GV/79G25.jpg</image:loc>
      <image:title>Light Scattering and Turbidity Cells - Type 79 Turbidity Measurement Cell (Lightpath: 25mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-75-light-scattering-fluorescence-cuvette</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Light Scattering and Turbidity Cells - Type 75 Light-Scattering Fluorescence Cuvette with Rounded Bottom</image:title>
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      <image:title>Light Scattering and Turbidity Cells - Type 75 Light-Scattering Fluorescence Cuvette with Rounded Bottom</image:title>
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  <url>
    <loc>https://www.fireflysci.com/light-scattering-and-turbidity-cells/type-76-light-scattering-fluorescence-cuvette</loc>
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      <image:title>Light Scattering and Turbidity Cells - Type 76 Light-Scattering Fluorescence Cuvette with Flat Bottom</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412641291036-932WYD5SJN4H7SO6WH7E/T-76.gif</image:loc>
      <image:title>Light Scattering and Turbidity Cells - Type 76 Light-Scattering Fluorescence Cuvette with Flat Bottom</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cryogenic-cuvettes</loc>
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    <priority>0.75</priority>
    <lastmod>2019-01-07</lastmod>
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      <image:title>Cryogenic Fluorometer Cuvettes</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cryogenic-cuvettes/type-66fl-macro-fluorescence-cryogenic-cuvette-with-screw-cap-lightpath-10mm</loc>
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      <image:title>Cryogenic Fluorometer Cuvettes - Type 66FL Macro Fluorescence Cryogenic Cuvette with Screw Cap (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cryogenic-cuvettes/type-64fl-macro-cryogenic-fluorescence-cuvette-with-ptfe-cover-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Cryogenic Fluorometer Cuvettes - Type 64FL Macro Cryogenic Fluorescence Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-cryogenic-cuvettes/type-65fl-cryogenic-fluorescence-cuvette-with-ptfe-stopper-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426634655288-YASOPD8SYYEBGA6RHM5V/65FLUV10.jpg</image:loc>
      <image:title>Cryogenic Fluorometer Cuvettes - Type 65FL Macro Cryogenic Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412642292743-KTBEIN0YF168HES0S2H2/T-65FL.gif</image:loc>
      <image:title>Cryogenic Fluorometer Cuvettes - Type 65FL Macro Cryogenic Fluorescence Cuvette with PTFE Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-tandem-divided-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-04-15</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122282492-6P866QQM5DO3CH0BAZLR/T-56.jpg</image:loc>
      <image:title>Tandem/Divided Fluorescence Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-tandem-divided-cuvettes/type-25afl</loc>
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    <priority>0.5</priority>
    <lastmod>2016-04-15</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412642825133-GDTS55SAWL412ZVTL2N3/T-125c.jpg</image:loc>
      <image:title>Tandem/Divided Fluorescence Cells - Type 25AFL Tandem Fluorescence Cell (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412642837491-XUS71T0Z04007IYGYH07/T-125C.gif</image:loc>
      <image:title>Tandem/Divided Fluorescence Cells - Type 25AFL Tandem Fluorescence Cell (Lightpath: 10mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-tandem-divided-cuvettes/type-56-tandem-fluorescence-cuvette-with-ptfe-stoppers-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412642680904-WLAIGC76ZQZ3ROKFXUQ6/T-56.jpg</image:loc>
      <image:title>Tandem/Divided Fluorescence Cells - Type 56 Tandem Fluorescence Cuvette with PTFE Stoppers (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412642654995-BHY47JP3JH9KJJ929MAK/T-56.gif</image:loc>
      <image:title>Tandem/Divided Fluorescence Cells - Type 56 Tandem Fluorescence Cuvette with PTFE Stoppers (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-anaerobic-cells-with-glass-pouch</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-01-11</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122586748-9TLVBSDIB6EDARBWMQJ9/71FLUV10-FF.jpg</image:loc>
      <image:title>Anaerobic Fluorescence Cells with Glass Pouch</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-anaerobic-cells-with-glass-pouch/type-28fl-standard-anaerobic-fluorescence-cell-with-glass-pouch-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1450828093769-K6VA85B5S1BXDGXUPERV/28FLUV10.jpg</image:loc>
      <image:title>Anaerobic Fluorescence Cells with Glass Pouch - Type 28FL Standard Anaerobic Fluorescence Cell with Glass Pouch (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436895805829-1CRBE7PZB84C6I8KSXKK/zoom_T-28FL.gif</image:loc>
      <image:title>Anaerobic Fluorescence Cells with Glass Pouch - Type 28FL Standard Anaerobic Fluorescence Cell with Glass Pouch (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-anaerobic-cells-with-glass-pouch/type-26fl-short-anaerobic-fluorescence-cell-with-glass-pouch-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412643178414-CFYYAWRB7MRSLI1PC7P7/T-26fl.jpg</image:loc>
      <image:title>Anaerobic Fluorescence Cells with Glass Pouch - Type 26FL Short Anaerobic Fluorescence Cell with Glass Pouch (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-anaerobic-cells-with-glass-pouch/type-71fl-macro-anaerobic-fluorescence-cell-with-glass-pouch-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418253359047-3LORHE32023LVXA38ZU3/71FLUV10-FF.jpg</image:loc>
      <image:title>Anaerobic Fluorescence Cells with Glass Pouch - Type 71FL Macro Anaerobic Fluorescence Cell with Glass Pouch (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/triangular-fluorometer-cuvettes</loc>
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    <priority>0.75</priority>
    <lastmod>2016-04-11</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122643589-OOBA1P7J8WMABMIJRPWM/81UV10.jpg</image:loc>
      <image:title>Triangular Fluorescence Cells</image:title>
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  <url>
    <loc>https://www.fireflysci.com/triangular-fluorometer-cuvettes/type-82-triangular-fluorescence-cell-with-ptfe-stopper-lightpath-10mm</loc>
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    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441234257770-GSVYHAKYCG3QU57YHWLK/82UV10-FF.jpg</image:loc>
      <image:title>Triangular Fluorescence Cells - Type 82 Triangular Fluorescence Cell with PTFE Stopper (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412644018667-6CNJR17I3OENCKBYS6WL/T-82.gif</image:loc>
      <image:title>Triangular Fluorescence Cells - Type 82 Triangular Fluorescence Cell with PTFE Stopper (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/triangular-fluorometer-cuvettes/type-81-triangular-fluorescence-cell-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426907888678-L1HG5FZJN9B457915GQS/81UV10.jpg</image:loc>
      <image:title>Triangular Fluorescence Cells - Type 81 Triangular Fluorescence Cell (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1412643844409-96WBYDZNFZG18R0VP9YM/T-81.gif</image:loc>
      <image:title>Triangular Fluorescence Cells - Type 81 Triangular Fluorescence Cell (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/fluorometer-water-jacketed-cuvettes</loc>
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    <priority>0.75</priority>
    <lastmod>2016-01-07</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122685709-XNXNQ3RW9YD67C1CPS5N/T-54.jpg</image:loc>
      <image:title>Water Jacketed Fluorescence Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/fluorometer-water-jacketed-cuvettes/type-54fl-water-jacketed-fluorescence-cell-with-ptfe-stopper-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438204484089-CQYTJRHAZFVE403O2B9R/54FLUV10.jpg</image:loc>
      <image:title>Water Jacketed Fluorescence Cells - Type 54FL Water Jacketed Fluorescence Cell with Front-Facing Tubes and PTFE Stopper (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/disposable-fluorescence-cells</loc>
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    <priority>0.75</priority>
    <lastmod>2016-03-29</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122725175-ZPECDNN0CG37VDLJ8LSF/3PMMA.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-fluorescence-cells/type-76ps-disposable-light-scattering-cuvettes</loc>
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    <priority>0.5</priority>
    <lastmod>2025-03-13</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1432842372553-3V934KLE79WMTW61T8B1/76PS.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 76P Disposable Light-Scattering Cuvettes</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081285039-WG8Z2F4XVADMYXV64KQ1/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 76P Disposable Light-Scattering Cuvettes</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/disposable-fluorescence-cells/type-9p-semi-micro-disposable-cuvettes-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427378878369-GW05UJSWEEMLYX63A4E9/9PMMA.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 9FLP Semi-Micro Disposable Cuvettes (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081259731-SY8ODX9NU1DH5FGK3CWO/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 9FLP Semi-Micro Disposable Cuvettes (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/disposable-fluorescence-cells/type-1flp-disposable-macro-cuvettes-lightpath-10mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427379899095-0F2HUXDNLEP2K2A5IOS8/3PMMA.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 1FLP Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081236792-6YKR5SQ2B6CGOXE580FN/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Disposable Fluorescence Cells - Type 1FLP Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/colorimeter-cells</loc>
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    <priority>0.75</priority>
    <lastmod>2016-03-18</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122768254-HMRQ25TYZSANOGLRMZ8T/96G20.jpg</image:loc>
      <image:title>Colorimeter Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/colorimeter-cells/type-529-small-rectangular-colorimeter-cell-lightpath-5mm</loc>
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    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1433968594124-7WPKELXC5SQL9BTBRYK8/529G5.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 529 Small Rectangular Colorimeter Cell (Lightpath: 5mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/colorimeter-cells/type-97-colorimeter-cell-lightpath-40mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426895870134-TF1OVKUWZTZB4EY8M0A8/97G40.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 97 Colorimeter Cell (Lightpath: 40mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/colorimeter-cells/type-96-x-rite-colorimeter-cell-lightpaths-25-100mm</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426895741837-JU0GZV1JIKQWJP66UH9P/96G20.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 96 X-Rite Colorimeter Cell (Lightpaths: 2.5-100mm)</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456765473581-01CSI20905JMJYKNFIG4/96G40-FF.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 96 X-Rite Colorimeter Cell (Lightpaths: 2.5-100mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456764681120-HRM8IN5F8TFOBLFMZLEF/96G100-FF.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 96 X-Rite Colorimeter Cell (Lightpaths: 2.5-100mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458320047861-QB64DHNL3DN98W4T7LXK/96G10-FF.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 96 X-Rite Colorimeter Cell (Lightpaths: 2.5-100mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/colorimeter-cells/type-93-colorimeter-cell-lightpaths-2-50mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426895435349-R76BJPSS60II5Y2KVL5L/93G10.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 93 Colorimeter Cell (Lightpaths: 2-50mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1456765066813-E26J3ECZ6L95P2Z97EFK/93G50-FF.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 93 Colorimeter Cell (Lightpaths: 2-50mm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458319371427-21BG5Z3EXAZZHX5JOAUP/93G2-FF.jpg</image:loc>
      <image:title>Colorimeter Cells - Type 93 Colorimeter Cell (Lightpaths: 2-50mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells</loc>
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    <lastmod>2017-10-26</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429122824520-KG6Z3KUDSUKEKANECQQ8/87UV30.jpg</image:loc>
      <image:title>Dye Laser Cells</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-0005-0023-1-quanta-ray-dye-laser-flow-through-cell-lightpath-6x6mm</loc>
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    <lastmod>2026-03-29</lastmod>
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      <image:title>Dye Laser Cells - Type 0005-0023-1 Quanta Ray Dye Laser Flow Through Cell (Lightpath: 6x6mm)</image:title>
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  <url>
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      <image:title>Dye Laser Cells - Type 0005-0078 Quanta Ray Dye Laser Cell</image:title>
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  <url>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426908102474-DLAHFGUR18DW5N7I9H3X/87UV30.jpg</image:loc>
      <image:title>Dye Laser Cells - Type 87 Macro Laser Absorption Cell with PTFE Stopper (Lightpath: 30-60mm)</image:title>
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      <image:title>Dye Laser Cells - Type 87 Macro Laser Absorption Cell with PTFE Stopper (Lightpath: 30-60mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-2267b-dye-laser-cell-lightpath-20x40mm</loc>
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    <lastmod>2026-01-05</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438885900545-IK2JQC6ENUFUPC5S4DR3/2267B.jpg</image:loc>
      <image:title>Dye Laser Cells - Type 2267B Dye Laser Cell (Lightpath: 20x40mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-2267a-dye-laser-cell-lightpath-20mm</loc>
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      <image:title>Dye Laser Cells - Type 2267A Dye Laser Cell (Lightpath: 20mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-0210-dye-laser-flow-through-cell-lightpath-17mm</loc>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426909026945-LHYWWSUGL5FL7CFHH2KC/0210.jpg</image:loc>
      <image:title>Dye Laser Cells - Type 0210 Dye Laser Flow Through Cell (Lightpath: 17mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-0005-0023-2-quanta-ray-dye-laser-flow-through-cell-lightpath-6x12mm</loc>
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      <image:title>Dye Laser Cells - Type 0005-0023-2 Quanta Ray Dye Laser Flow Through Cell (Lightpath: 6x12mm)</image:title>
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  <url>
    <loc>https://www.fireflysci.com/dye-laser-cells/type-1208-sirah-dye-laser-capillary-cell</loc>
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  <url>
    <loc>https://www.fireflysci.com/wavelength-accuracy</loc>
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    <priority>0.75</priority>
    <lastmod>2019-06-25</lastmod>
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      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers</image:title>
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  <url>
    <loc>https://www.fireflysci.com/wavelength-accuracy/wav-nir-nir-wavelength-accuracy-standard</loc>
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      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-8 NIR Wavelength Accuracy Standard (700-3000nm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561477164094-DZ721MRVRNUG5WX5UBWK/Kit750-WAV-8.jpg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-8 NIR Wavelength Accuracy Standard (700-3000nm)</image:title>
      <image:caption>SAMPLE WAV-8 NIR CERTIFICATE OF CALIBRATION</image:caption>
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      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-8 NIR Wavelength Accuracy Standard (700-3000nm)</image:title>
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    <loc>https://www.fireflysci.com/wavelength-accuracy/wav-1-uvvis-advanced-holmium-oxide-wavelength-accuracy-standard</loc>
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      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-1 UV/VIS Advanced Holmium Oxide Wavelength Accuracy Standard (240-640nm)</image:title>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561476399471-PVXVUD3RHAL092WCZSW9/Kit751-WAV-1.jpg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-1 UV/VIS Advanced Holmium Oxide Wavelength Accuracy Standard (240-640nm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438811293892-OD83KMOZNR3SOIOT8I6N/WAV-1+UV%2FVIS+Absorbance+Scan</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-1 UV/VIS Advanced Holmium Oxide Wavelength Accuracy Standard (240-640nm)</image:title>
      <image:caption>Absorbance Data</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438812083386-T7O1WOJDYKLEOMUYEF0L/image-asset.jpeg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-1 UV/VIS Advanced Holmium Oxide Wavelength Accuracy Standard (240-640nm)</image:title>
      <image:caption>Transmission Data</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1467148226824-3SWCC3PT657AM7UPCLPT/Savannah+River+National+Lab-+WAV-1+UV-VIS.jpg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-1 UV/VIS Advanced Holmium Oxide Wavelength Accuracy Standard (240-640nm) - Savannah River National Laboratory</image:title>
      <image:caption>Read on page 17 for our WAV-1 UV/VIS in action</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/wavelength-accuracy/wav-7-uvvis-wavelength-uv-photometric-accuracy-standard</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429647480082-E3TT9U4F0KNJY43EII6A/WAV-7+UV-VIS.jpg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (329-875nm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561476906380-SUIFW19GVXE0IK3T0Z18/Kit756-WAV-7.jpg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (329-875nm)</image:title>
      <image:caption>SAMPLE WAV-7 UV/VIS CERTIFICATE OF CALIBRATION</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1445972162361-XE8BNVNT73XVI277M3DV/image-asset.jpeg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (329-875nm)</image:title>
      <image:caption>Absorbance Data</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1445971780541-FBRACBICX5Z0YX0B7R8T/image-asset.jpeg</image:loc>
      <image:title>Wavelength Accuracy for Validating UV/VIS Spectrophotometers - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (329-875nm)</image:title>
      <image:caption>Transmission Data</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits</loc>
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    <priority>0.75</priority>
    <lastmod>2017-12-05</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429123290212-0H3ONNYU23NP3KSQOP3E/FUVKit.jpg</image:loc>
      <image:title>Calibration Kits</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/uvvis-photometric-uvvis-wavelength-accuracy-kit</loc>
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    <priority>0.5</priority>
    <lastmod>2024-12-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1488216182177-3BS0CBC37E90MTWV9B4R/FUVKitPlusWAV1.jpg</image:loc>
      <image:title>Calibration Kits - UV/VIS Photometric &amp; UV/VIS Wavelength Accuracy Kit</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/ultimate-uvvisnir-photometric-wavelength-stray-light-calibration-kit</loc>
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    <priority>0.5</priority>
    <lastmod>2024-12-24</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1450739858941-5W5B4YC9ZXDO3KESDDAQ/Ultimate+Kit-UV-VIS-NIR.jpg</image:loc>
      <image:title>Calibration Kits - Ultimate UV/VIS/NIR Photometric, Wavelength &amp; Stray Light Calibration Kit</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/superband-uvvisnir-photometric-accuracy-linearity-kit-10t-30t-90t-200-3000nm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446935914842-GVZ9VMBNLK76IZ329N1I/SuperbandKit.jpg</image:loc>
      <image:title>Calibration Kits - Superband UV/VIS/NIR Photometric Accuracy &amp; Linearity Kit (10%T, 30%T, 90%T) (200-3000nm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1486654658737-OHSP8OTEW13TKX4L2SWB/image-asset.jpeg</image:loc>
      <image:title>Calibration Kits - Superband UV/VIS/NIR Photometric Accuracy &amp; Linearity Kit (10%T, 30%T, 90%T) (200-3000nm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/full-uvvis-photometric-accuracy-wavelength-stray-light-calibration-kit</loc>
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    <lastmod>2026-01-08</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1414693033192-OKL9L1EVDLP7FIMQ70JE/calibration-kit-4.jpg</image:loc>
      <image:title>Calibration Kits - Full UV/VIS Photometric Accuracy &amp; Wavelength Accuracy Calibration Kit</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436994866431-A8U3DGYCFXF6D20F0X9J/Kit412-FUV-05.jpg</image:loc>
      <image:title>Calibration Kits - Full UV/VIS Photometric Accuracy &amp; Wavelength Accuracy Calibration Kit</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436994866434-H1CUGEXJOFAXCK926YV0/Kit412-HF-FIlters.jpg</image:loc>
      <image:title>Calibration Kits - Full UV/VIS Photometric Accuracy &amp; Wavelength Accuracy Calibration Kit</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436994867751-29QX07SSF9PG8YJYQ7PF/Kit412-WAV-1-UV-VIS.jpg</image:loc>
      <image:title>Calibration Kits - Full UV/VIS Photometric Accuracy &amp; Wavelength Accuracy Calibration Kit</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436994867802-OO4KJLMUBW1IAK4NXSXH/Kit412-WAV-7.jpg</image:loc>
      <image:title>Calibration Kits - Full UV/VIS Photometric Accuracy &amp; Wavelength Accuracy Calibration Kit</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/fnir-photometric-accuracy-kit</loc>
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    <lastmod>2026-01-08</lastmod>
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      <image:title>Calibration Kits - FNIR Photometric Accuracy &amp; Linearity Kit (10%T, 20%T, 30%T) (700-3000nm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/calibration-kits/vis-photometric-uvvis-wavelength-accuracy-kit</loc>
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    <lastmod>2026-03-29</lastmod>
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      <image:title>Calibration Kits - VIS Photometric &amp; UV/VIS Wavelength Accuracy Kit</image:title>
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  <url>
    <loc>https://www.fireflysci.com/calibration-kits/nist-2930-vis-photometric-neutral-density-kit-01t-03t-90t</loc>
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    <lastmod>2026-01-08</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458765930949-GZHCS1FSYAWJQNBEGJ3K/NIST2930Kit.jpg</image:loc>
      <image:title>Calibration Kits - NIST 2930 VIS Photometric Neutral Density Kit (0.1%T, 0.3%T, 90%T) (400-700nm)</image:title>
    </image:image>
    <image:image>
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      <image:title>Calibration Kits - NIST 2930 VIS Photometric Neutral Density Kit (0.1%T, 0.3%T, 90%T) (400-700nm)</image:title>
      <image:caption>Sample NIST-2930 Certificate of Calibration</image:caption>
    </image:image>
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  <url>
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      <image:title>Calibration Kits - NIST 2031 UV/VIS Photometric Accuracy Kit (10%T, 30%T, 90%T) (200-700nm)</image:title>
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    <image:image>
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      <image:title>Calibration Kits - NIST 2031 UV/VIS Photometric Accuracy Kit (10%T, 30%T, 90%T) (200-700nm)</image:title>
      <image:caption>NIST 2031 Kit Sample Certificate of Calibration</image:caption>
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  <url>
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    <changefreq>monthly</changefreq>
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      <image:title>Calibration Kits - NIST 1930 VIS Photometric Accuracy Neutral Density Kit (1%T, 3%T, 50%T) (400-700nm)</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465503008239-NAZSUGO4GT7W879PUKDB/image-asset.jpeg</image:loc>
      <image:title>Calibration Kits - NIST 1930 VIS Photometric Accuracy Neutral Density Kit (1%T, 3%T, 50%T) (400-700nm)</image:title>
      <image:caption>Sample NIST-1930 kit certificate of calibration</image:caption>
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  <url>
    <loc>https://www.fireflysci.com/calibration-kits/nist-930e-vis-photometric-accuracy-neutral-density-kit-10t-20t-30t</loc>
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      <image:title>Calibration Kits - NIST 930e VIS Photometric Accuracy Neutral Density Kit (10%T, 20%T, 30%T) (400-700nm)</image:title>
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    <image:image>
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      <image:title>Calibration Kits - NIST 930e VIS Photometric Accuracy Neutral Density Kit (10%T, 20%T, 30%T) (400-700nm)</image:title>
      <image:caption>SAMPLE NIST 930E KIT CERTIFICATE OF CALIBRATION</image:caption>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers</image:title>
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  </url>
  <url>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - KI Solid State Stray Light Filter 260 nm Cutoff</image:title>
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  <url>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - NaI Solid State Stray Light Filter 260 nm Cutoff</image:title>
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  <url>
    <loc>https://www.fireflysci.com/stray-light/nano2-solid-state-stray-light-filter</loc>
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    <lastmod>2025-01-29</lastmod>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - NaNO2 Solid State Stray Light Filter 391 nm Cutoff</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/stray-light/acetone-solid-state-stray-light-filter</loc>
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    <priority>0.5</priority>
    <lastmod>2025-01-29</lastmod>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - Acetone Solid State Stray Light Filter 260 nm Cutoff</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/stray-light/fuv-dual-series-uvvis-photometric-accuracy-stray-light-calibration-standards</loc>
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    <lastmod>2026-01-08</lastmod>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - FUV Dual Series: UV/VIS Photometric Accuracy &amp; Stray Light Calibration Standards (200-700nm) (Optical Densities 0.2-4.0au)</image:title>
    </image:image>
    <image:image>
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      <image:title>Stray Light Calibration Standards for Validating UV/VIS Spectrophotometers - FUV Dual Series: UV/VIS Photometric Accuracy &amp; Stray Light Calibration Standards (200-700nm) (Optical Densities 0.2-4.0au)</image:title>
      <image:caption>Sample FUV-1.0D Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-01-07</lastmod>
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      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells/type-8830-hplc-sub-micro-flow-through-cell-lightpath-1mm</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
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      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells - Type 8830 HPLC Sub-Micro Flow Through Cell (Lightpath: 1mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells/type-526-flow-cytometer-cell-lightpath-020mm</loc>
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      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells - Type 526 Flow Cytometer Cell (Lightpath: 0.25mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells/type-512-15-refractometer-flow-cell</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells - Type 512 15º Refractometer Flow Cell</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells/type-511-45-refractometer-flow-cell</loc>
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    <lastmod>2026-01-02</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429291927195-93U6DFUOK5U961JQMLAZ/511UV.jpg</image:loc>
      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells - Type 511 45º Refractometer Flow Cell</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/flow-cytometry-cells/type-510-refractometer-flow-cell</loc>
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      <image:title>Particle Analysis, Cell Counting and Flow Cytometry Cells - Type 510 Refractometer Flow Cell</image:title>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1438708332092-F13DBZA84P75JJLKAN4J/Type%2B608FL.jpg</image:loc>
      <image:title>HPLC Flow Cells - Type 608FL HPLC UV Quartz Flow Cell (Capacities: 11-100µl)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2016-03-28</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429123020881-537V77LI8H5QUCJQWV9V/FUV05.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/superband-series</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1647607209134-QUO7MXGN477IMZR00YRQ/SPB-0.png</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - Superband Series: Full UV/VIS/NIR Photometric Accuracy Calibration Standards (200-3000nm) (Optical Densities: 0.04 - 4.0au)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1465441319880-EC0IC3GHFL67RTJT5XQD/image-asset.jpeg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - Superband Series: Full UV/VIS/NIR Photometric Accuracy Calibration Standards (200-3000nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>Sample Superband Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/wav-7-uvvis-wavelength-uv-photometric-accuracy-standard</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429647558348-HM1M9ZP12W7SIUF1DGMV/WAV-7+UV-VIS.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (270-340nm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561477379119-SBQ7OYZEU33TG5V8UP5B/Sample+WAV-7+UV%2FVIS+Certificate+of+Calibration</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - WAV-7 UV/VIS Wavelength &amp; UV Didymium Photometric Accuracy Standard (270-340nm)</image:title>
      <image:caption>Sample WAV-7 UV/VIS Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/fnir-series-nir-photometric-accuracy-calibration-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1433368645488-HTEDOLOU3EH52U7A26II/FNIR-2.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FNIR Series: NIR Photometric Accuracy Calibration Standards (700-3000nm) (Optical Densities: 0.04 - 4.0au)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1436993622652-9QPJ9KVRSMVFJKHZX74L/Sample+FNIR-2.0+Certificate+of+Calibration</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FNIR Series: NIR Photometric Accuracy Calibration Standards (700-3000nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>Sample FNIR-2.0 Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/fuv-dual-series-uvvis-photometric-accuracy-stray-light-calibration-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1444340979341-L1951O4WJUXZ3D6VKKRO/FUV-1D.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FUV Dual Series: UV/VIS Photometric Accuracy &amp; Stray Light Calibration Standards (200-700nm) (Optical Densities: 0.2 - 4.0au)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561477342043-N4UNXMPL7NG0FMINNRT3/Kit730-FUV-15D.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FUV Dual Series: UV/VIS Photometric Accuracy &amp; Stray Light Calibration Standards (200-700nm) (Optical Densities: 0.2 - 4.0au)</image:title>
      <image:caption>Sample FUV-1.5D Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/fuv-series</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427403761049-ZD6ZN9COX71VIOK0U978/FUV05+%28No+Reflection%29.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FUV Series: UV/VIS Photometric Accuracy Calibration Standards (200-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561477301757-EBVIA6BOEOMNPGGFV8MY/FUV-0.5+Sample+Certificate+of+Calibration</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - FUV Series: UV/VIS Photometric Accuracy Calibration Standards (200-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>FUV-0.5 Sample Certificate of Calibration</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/photometric-accuracy/hf-series-vis-photometric-accuracy-calibration-standards</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-08</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427402905096-PT7JFRVLR8FTV9KK0WSX/HF+Series+%28no+reflection%29.jpg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - HF Series: VIS Photometric Accuracy Calibration Standards (400-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1561477252450-B94SJD4VHN28NGGVVEWP/HF-0.2+Sample+Certificate+of+Calibration</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - HF Series: VIS Photometric Accuracy Calibration Standards (400-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>HF-0.04 sample certificate of calibration</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446064442267-XD546KH0EJA8E5GLSF5P/image-asset.jpeg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - HF Series: VIS Photometric Accuracy Calibration Standards (400-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>Absorbance Scan</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1446064374948-GS4DKJTX4G53OTXU71YC/image-asset.jpeg</image:loc>
      <image:title>Photometric Accuracy, Absorbance and Linearity Calibration Standards - HF Series: VIS Photometric Accuracy Calibration Standards (400-700nm) (Optical Densities: 0.04 - 4.0au)</image:title>
      <image:caption>Transmission Scan</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes</loc>
    <changefreq>daily</changefreq>
    <priority>0.75</priority>
    <lastmod>2019-05-14</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429117466984-RTC3F2DZYC92AE3OTJ2H/5UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type1ms-macro-magnetic-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1470772928058-0MH6X2XY1866S1YQV7X7/1MSUV10withP73-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1MS Macro Cuvette with PTFE Cover and Magnetic Stirrer Slot (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1470772930892-0GM6H76YXYL4V9B5YMW0/1MSUV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1MS Macro Cuvette with PTFE Cover and Magnetic Stirrer Slot (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-31-macro-cuvette-with-protruding-neck-and-glass-stopper-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1458762013043-DV65UEIUY81MG31AHOSX/31UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 31 Macro Cuvette with Protruding Neck and Glass Stopper (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-45-macro-flow-through-cell-with-detachable-tubes-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418669434657-TFZ076KBB8TWYTO2PM1E/45UV-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 45 Macro Flow Through Cell with Detachable Tubes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-1-macro-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434483765886-0KDTYQAI8J4GMMXLJX25/1UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434409598008-9996ETTFRQ9Q0Q2OGQ3Q/1UV1-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm) - Type 1 - 1mm lightpath</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434483779801-KAOSSJW1RPDB89M3I5M8/1UV2-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441231975785-HBSILD4UAZ4T6SV0NHHG/1IR50-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1441233877638-M8HUM3R1HMO2YMSY6QNO/1UV100-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1467214991628-30P9D7WNIJOQHGHI8XY5/Journal+of+Geophysical+Research-+1UV10.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm) - Journal of Geophysical Research</image:title>
      <image:caption>See page 2 for our Type 1 100mm UV Quartz cuvette in action.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1467226300394-B8HQVA30UU5YRU464AMZ/Biophysical+Journal-+1UV10.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1 Macro Cuvette with PTFE Cover (Lightpaths: 0.5-100mm) - Biophysical Journal</image:title>
      <image:caption>See page 2254 for our Type 1 10mm UV Quartz cuvette in action.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-509-macro-100mm-tall-cuvette-with-ptfe-cover-lightpath-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418334669906-YRLAYJG3MXWV6KEPI1IY/509UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 509 Macro 100mm Tall Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-1p-disposable-macro-cuvettes</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1427318761482-IYGXK36HZAAAO4FKLG76/1PS.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1P Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1510081313517-XFYD9HQFSE9GFHYFO3UB/transmission+curves+plastic+cuvettes.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 1P Disposable Macro Cuvettes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-523-rectangular-absorption-cuvette-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1426607090918-IE50QS0G79FYFC2DXMUM/523G10.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 523 Rectangular Absorption Cuvette (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-508-macro-65mm-tall-cuvette-with-ptfe-cover-lightpath-100mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418331751883-GNOO4YN3O6A5PIJFOSLJ/508UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 508 Macro 65mm Tall Cuvette with PTFE Cover (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-501-macro-flow-through-cell-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1429542995190-H7A0WIXQ5JC6QO5E6RJ7/501UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 501 Macro Flow Through Cell (Lightpaths: 5-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434405771197-7F0QRB2A91W5I56WHYML/501UV5.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 501 Macro Flow Through Cell (Lightpaths: 5-10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-71-macro-anaerobic-cuvette-with-glass-pouch-lightpaths-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418315720420-ZUVQS8KWCH9CZC8GBH67/71FLUV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 71 Macro Anaerobic Cuvette with Glass Pouch (Lightpaths: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-61-macro-cuvette-with-graded-seal-tube-lightpaths-1-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418333012555-P9ZLFAYJWTB6VJ5TJBA2/61UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434065823374-D1WZK0WC26W5ZUH0QMVT/61UV1.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1434065823269-IN71YDD2UFZW990XFS3C/61UV5.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 61 Macro Cuvette with Quartz-to-Pyrex Graded Seal Tube (Lightpaths: 0.5-10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-58-macro-flow-through-cell-with-top-tubes-lightpath-10mm</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1418406487633-M1PKD9LWKDCZ24N4T8QW/58UV10-FF.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 58 Macro Flow Through Cell with Top Tubes (Lightpath: 10mm)</image:title>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5411d5c0e4b02e1c8b27565a/1452629499201-25LSDNJTEJHP3DUGEDN3/58UV10.jpg</image:loc>
      <image:title>Macro Cuvettes - Type 58 Macro Flow Through Cell with Top Tubes (Lightpath: 10mm)</image:title>
    </image:image>
  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-41-macro-cuvette</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2026-01-02</lastmod>
    <image:image>
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      <image:title>Macro Cuvettes - Type 41 Macro Cuvette with Screw Cap (Lightpaths: 1-100mm)</image:title>
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      <image:title>Macro Cuvettes - Type 41 Macro Cuvette with Screw Cap (Lightpaths: 1-100mm)</image:title>
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      <image:title>Macro Cuvettes - Type 41 Macro Cuvette with Screw Cap (Lightpaths: 1-100mm)</image:title>
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  </url>
  <url>
    <loc>https://www.fireflysci.com/macro-spectrophotometer-cuvettes/type-21-macro-cuvette-with-ptfe-stopper-lightpaths-01-100mm</loc>
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      <image:title>Macro Cuvettes - Type 21 Macro Cuvette with PTFE Stopper (Lightpaths: 0.5-100mm)</image:title>
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  </url>
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      <image:title>Macro Cuvettes - Type 11 Macro Cuvette with Glass Cap (Lightpaths: 1-50mm)</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - Type 526 Flow Cell Assembly and Mount System</image:title>
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      <image:title>Recommended Products - SC2 Open Black Septum Screw Cap</image:title>
      <image:caption>Source: Industrial Specialities Mfg: http://www.industrialspec.com</image:caption>
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