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  <url>
    <loc>https://nitrate.com/</loc>
    <changefreq>daily</changefreq>
  </url>
  <url>
    <loc>https://nitrate.com/products/water-nitrate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-WSR-05.jpg?v=1773772767</image:loc>
      <image:title>Water Nitrate Test Kit</image:title>
      <image:caption>Water Nitrate Test Kit - Standard Range kit contents including reaction cuvettes, buffer, color reagents, sample collection tubes, and cardboard cuvette holder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/soil-nitrate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-S-05.jpg?v=1773242878</image:loc>
      <image:title>Soil Nitrate Test Kit</image:title>
      <image:caption>Soil Nitrate Test Kit - Complete kit contents including reaction cuvettes, buffer, color reagents, sample collection tubes, measuring spoon, and cardboard cuvette holder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/dry-forage-nitrate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-DF-05.jpg?v=1773172154</image:loc>
      <image:title>Dry Forage Nitrate Test Kit</image:title>
      <image:caption>Dry Forage Nitrate Test Kit - Complete kit contents including reaction cuvettes, buffer, color reagents, and sample collection tubes</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/green-forage-nitrate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-GF-05.jpg?v=1773172259</image:loc>
      <image:title>Green Forage Nitrate Test Kit</image:title>
      <image:caption>Green Forage Nitrate Test Kit - Complete kit contents including reaction cuvettes, buffer, color reagents, sample collection tubes, and cardboard cuvette holder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/water-phosphate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/PTK-WSR-05.jpg?v=1773774168</image:loc>
      <image:title>Water Phosphate Test Kit</image:title>
      <image:caption>Water Phosphate Test Kit - Standard Range kit contents including reaction cuvettes, buffer, sample collection tubes, pipettes, and cardboard cuvette holder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/soil-phosphate-test-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/PTK-SSR-05.jpg?v=1773946188</image:loc>
      <image:title>Soil Phosphate Test Kit</image:title>
      <image:caption>Soil Phosphate Test Kit - kit contents including reaction cuvettes, buffer, sample collection tubes, pipettes, measuring spoon, and cardboard cuvette holder</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/benchtop-phosphate-reagents</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/PTK-TTSR-25.jpg?v=1773774414</image:loc>
      <image:title>Benchtop Phosphate Test Kit</image:title>
      <image:caption>Benchtop Phosphate Test Kit - Standard Range kit with MESG, PnP, HEPES/MgCl2 buffer, Phosphate Standard, standard tubes, and dilution tube.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/pnp-enzyme-only</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/PNP-1U.jpg?v=1773175902</image:loc>
      <image:title>PNP - Purine Nucleoside Phosphorylase (Enzyme Only)</image:title>
      <image:caption>Plastic tube of PNP enzyme and vial of enzyme diluent</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/benchtop-nitrate-reagent-kit</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-TTLR-25.jpg?v=1774021203</image:loc>
      <image:title>Benchtop Nitrate Test Kit</image:title>
      <image:caption>Benchtop Nitrate Test Kit - Low Range freshwater kit with nitrate reductase, NADH, assay buffer, and color reagents</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/microplate-format-nitrate-test-kits</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NTK-MPLR-S.jpg?v=1773173438</image:loc>
      <image:title>Microplate Format Nitrate Test Kits</image:title>
      <image:caption>Microplate Format Nitrate Test Kit - Low Range saltwater kit with 96-well plate, nitrate reductase, NADH, assay buffer, NaCl water, and color reagents</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/atnar-nitrate-reductase</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/AtNaR-0.5U_and_AtNaR-1U.jpg?v=1773778341</image:loc>
      <image:title>AtNaR Nitrate Reductase (Enzyme Only)</image:title>
      <image:caption>AtNaR Nitrate Reductase (Enzyme Only) - Clear plastic tube with green cap labeled AtNaR and vial of enzyme diluent</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/ynar-nitrate-reductase</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/YNaR.jpg?v=1773173001</image:loc>
      <image:title>YNaR Nitrate Reductase (Enzyme Only)</image:title>
      <image:caption>YNaR Nitrate Reductase (Enzyme Only) - Clear plastic tube of YNaR and vial of enzyme diluent</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/atnar-nitrate-reductase-reagents-kit-for-discrete-analyzers</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NRPk-HDA-3At.jpg?v=1773174585</image:loc>
      <image:title>AtNaR Nitrate Reductase Reagents Kit for Discrete Analyzers</image:title>
      <image:caption>AtNaR Nitrate Reductase Reagents Kit for High Capacity Discrete Analyzers - Two tubes with yellow and red caps labeled &apos;NADH&apos; and &apos;AtNaR&apos;, and a vial of enzyme diluent</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/nitrate-reductase-diluent-bulb-pack</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NaR-EDB-05.jpg?v=1773772054</image:loc>
      <image:title>Nitrate Reductase Diluent Bulb Pack</image:title>
      <image:caption>Nitrate Reductase Diluent Bulb Pack (5 Pack) - enzyme diluent bulbs</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/assay-buffer</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/E-ABN.jpg?v=1774020512</image:loc>
      <image:title>Assay Buffer</image:title>
      <image:caption>Assay Buffer for Nitrate Testing - Two 50mL bottles of lab-grade potassium phosphate buffer solution</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://nitrate.com/products/nadh-for-nitrate-reductase-assays</loc>
    <lastmod>2026-07-07T13:51:43-04:00</lastmod>
    <changefreq>daily</changefreq>
    <image:image>
      <image:loc>https://cdn.shopify.com/s/files/1/0972/5830/7948/files/NADH.jpg?v=1773175690</image:loc>
      <image:title>NADH for Nitrate Reductase Assays</image:title>
      <image:caption>NADH for Nitrate Reductase Assays - Clear plastic tube containing freeze-dried NADH cofactor</image:caption>
    </image:image>
  </url>
</urlset>
