{"title":"For Laboratories","description":"\u003cp\u003eValidated enzyme-based kits and reagents for laboratory analysis. Current methods include nitrate and phosphate. Scalable formats from standard bench work to high-throughput autoanalyzers, with \u003ca href=\"\/pages\/method-validations\" title=\"Method Validations\"\u003eEPA, USGS, and ASTM-validated methods\u003c\/a\u003e for regulated labs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","products":[{"product_id":"benchtop-phosphate-reagents","title":"Benchtop Phosphate Test Kit","description":"\u003ch2\u003eProfessional Phosphate Analysis Made Simple\u003c\/h2\u003e\n\u003cp\u003eGet accurate, quantitative phosphate measurements from any aqueous sample with this complete benchtop reagent kit. Perfect for laboratories analyzing wastewater, soil extracts, plant tissue, and environmental samples.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Testing:\u003c\/strong\u003e Analyze wastewater, soil extracts, plant samples, and more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Sample Prep:\u003c\/strong\u003e Extract solid samples with HPLC water before analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Results:\u003c\/strong\u003e Quantifies phosphate in complex mixtures using proven photometric method\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Tube Format:\u003c\/strong\u003e Easy-to-use benchtop protocol compatible with standard lab equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Options:\u003c\/strong\u003e Choose your concentration range and sample quantity to match your needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAvailable Ranges\u003c\/h2\u003e\n\u003cp\u003ePhosphate is reported in different units depending on your field of use and where you live.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003ePTK Test Tube Kits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Phosphate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Phosphate-P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eµM Phosphate\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eStandard Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e5.0 - 20.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e1.63 - 6.53\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e52.65 - 210.59\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eLow Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.5 - 5.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.16 - 1.6\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e5.26 - 52.65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eKit Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e25 Sample or 100 Sample Analysis\u003c\/li\u003e\n\u003cli\u003eChoose either Standard Range or Low Range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNeed a custom configuration? \u003ca title=\"Contact Us\" href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e to create a kit tailored to your specific application.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nitrate.com\/store\/media\/wysiwyg\/Pictures\/PNP-ASSAY-SCHEMATIC.png\" alt=\"Phosphate Assay Schematic - PNP Method\"\u003e\u003c\/p\u003e\n\u003cp\u003eOur proven colorimetric method produces a purine product that increases absorbance at 360 nm in direct proportion to inorganic phosphate concentration. Simply measure your samples against the included phosphate standards and calculate concentrations using linear regression—it's that straightforward.\u003c\/p\u003e\n\u003ch2\u003eMaterials You Will Need\u003c\/h2\u003e\n\u003cp\u003eYou will need a graduated cylinder, variable pipetters, a test tube vortex-type mixer, spectrophotometer capable of measuring 360 nm with UV compatible cuvettes, clean and phosphate-free 13 x 100mm test tubes, a timer, HPLC water, and ice.\u003c\/p\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMESG in dry powder form\u003c\/li\u003e\n\u003cli\u003ePurine Nucleoside Phosphorylase (PNP) freeze-dried protein glass\u003c\/li\u003e\n\u003cli\u003eHEPES\/MgCl\u003csub\u003e2\u003c\/sub\u003e buffer\u003c\/li\u003e\n\u003cli\u003ePhosphate Standard (100 ppm Phosphate) in liquid form\u003c\/li\u003e\n\u003cli\u003eStandard tubes – 5 tubes (1.5 mL) for preparing Phosphate Standards\u003c\/li\u003e\n\u003cli\u003eDilution tube – (5 mL) for preparing stock standard\u003c\/li\u003e\n\u003cli\u003eSet of Instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWastewater treatment monitoring\u003c\/li\u003e\n\u003cli\u003eSoil nutrient analysis\u003c\/li\u003e\n\u003cli\u003ePlant tissue testing\u003c\/li\u003e\n\u003cli\u003eEnvironmental water quality assessment\u003c\/li\u003e\n\u003cli\u003eResearch and quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Requirements\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis product must be stored refrigerated at 4°C upon receipt.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Contact Us\" href=\"\/pages\/contact\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003ca href=\"mailto:sales@nitrate.com\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PTK-TTSR-25_instructions.pdf\" target=\"_blank\"\u003eStandard Range Test Tube Format Phosphate Test Kit Instructions: 25 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PTK-TTLR-25_instructions.pdf\" target=\"_blank\"\u003eLow Range Test Tube Format Phosphate Test Kit Instructions: 25 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PTK-TTSR-100_instructions.pdf\" target=\"_blank\"\u003eStandard Range Test Tube Format Phosphate Test Kit Instructions: 100 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PTK-TTLR-100_instructions.pdf\" target=\"_blank\"\u003eLow Range Test Tube Format Phosphate Test Kit Instructions: 100 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PNP_Storage_and_Reconstitution.pdf\" target=\"_blank\"\u003ePNP Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/Phosphate_Test_Kits_SDS.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS for Phosphate Test Kits\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"25 Sample Analysis \/ Standard Range: 5 ppm - 20 ppm Phosphate","offer_id":53132936806764,"sku":"PTK-TTSR-25","price":50.0,"currency_code":"USD","in_stock":true},{"title":"25 Sample Analysis \/ Low Range: 0.5 - 5 ppm Phosphate","offer_id":53132936839532,"sku":"PTK-TTLR-25","price":50.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Standard Range: 5 ppm - 20 ppm Phosphate","offer_id":53132936872300,"sku":"PTK-TTSR-100","price":125.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Low Range: 0.5 - 5 ppm Phosphate","offer_id":53132936905068,"sku":"PTK-TTLR-100","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PTK-TTSR-25.jpg?v=1773774414"},{"product_id":"pnp-enzyme-only","title":"PNP - Purine Nucleoside Phosphorylase (Enzyme Only)","description":"\u003ch2\u003eRecombinant PNP for Precise Phosphate Quantification\u003c\/h2\u003e\n\u003cp\u003eNECi's recombinant Purine Nucleoside Phosphorylase (PNP) is a highly purified enzyme used for accurate phosphate quantification in laboratory applications. It catalyzes the orthophosphate-dependent transfer to ribose with release of free purine base, providing a reliable and specific method for phosphate detection.\u003c\/p\u003e\n\u003cp\u003eThis enzyme is ideal for researchers and laboratories requiring precise phosphate measurements with minimal sample preparation and high specificity to reduce false positives.\u003c\/p\u003e\n\u003ch2\u003eProduct Format\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePurine Nucleoside Phosphorylase (Enzyme Only)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAffinity purified recombinant enzyme\u003c\/li\u003e\n\u003cli\u003eAnimal origin free\u003c\/li\u003e\n\u003cli\u003eSupplied as freeze-dried protein glass with enzyme diluent bulb\u003c\/li\u003e\n\u003cli\u003eAvailable in 1, 2, 3, and 5 unit quantities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEnzyme Activity\u003c\/h2\u003e\n\u003cp\u003eOne unit produces 1 µmole of hypoxanthine from inosine per minute at pH 8.0 and 22°C.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Specificity:\u003c\/strong\u003e Reduces false positives in phosphate detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMESG Co-factor:\u003c\/strong\u003e Utilizes MESG (2-amino-6-mercapto-7-methylpurine riboside) as the co-factor to accurately quantify phosphate in samples\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimal Sample Preparation:\u003c\/strong\u003e Little sample preparation required for analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Sample Size:\u003c\/strong\u003e Requires small sample size in relation to total assay volume\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent \u0026amp; Reliable:\u003c\/strong\u003e Recombinant production ensures lot-to-lot consistency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e Affinity purified for maximum enzyme activity and purity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS Number:\u003c\/strong\u003e 9030-21-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Form:\u003c\/strong\u003e Freeze-dried protein glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecific Activity: \u003c\/strong\u003e5-15 units\/mg protein\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpected Purity Range:\u003c\/strong\u003e Greater than 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range in Assay:\u003c\/strong\u003e 15-45°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Recombinantly manufactured in \u003cem\u003eEscherichia coli\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eIdeal for laboratories performing phosphate analysis in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBiochemical research and enzyme kinetics studies\u003c\/li\u003e\n\u003cli\u003ePhosphate quantification assays\u003c\/li\u003e\n\u003cli\u003eMetabolic pathway analysis\u003c\/li\u003e\n\u003cli\u003eDrug discovery and development\u003c\/li\u003e\n\u003cli\u003eQuality control testing\u003c\/li\u003e\n\u003cli\u003eAcademic and industrial research laboratories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 36.5514%;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 19.6681%;\"\u003e-20°C or lower\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 14.4465%;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 17.2314%;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 12.0097%;\"\u003e30-40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 36.5514%;\"\u003e\u003cstrong\u003eFreeze-Dried (vacuum-sealed packets)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 19.6681%;\"\u003eStable indefinitely\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 14.4465%;\"\u003e24+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 17.2314%;\"\u003e12+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 12.0097%;\"\u003e1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 36.5514%;\"\u003e\u003cstrong\u003eFreeze-Dried (in vials, desiccated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 19.6681%;\"\u003e12+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 14.4465%;\"\u003e12+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 17.2314%;\"\u003e-\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 12.0097%;\"\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 36.5514%;\"\u003e\u003cstrong\u003eWorking Solution (1 U\/ml in buffer)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 19.6681%;\"\u003e6 - 12 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 14.4465%;\"\u003e1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 17.2314%;\"\u003e\u0026gt;12 hours\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid rgb(0, 0, 0); padding: 8px; width: 12.0097%;\"\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"PNP Storage and Reconstitution\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PNP_Storage_and_Reconstitution.pdf\" target=\"_blank\"\u003ePNP Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003ePNP Specification Sheet *Coming Soon*\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/nitrate.com\/store\/index.php\/blank\" target=\"_blank\"\u003eSDS for PNP *Coming Soon*\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"1 Unit","offer_id":53132973736300,"sku":"PNP-1U","price":21.0,"currency_code":"USD","in_stock":true},{"title":"2 Units","offer_id":53290895868268,"sku":"PNP-2U","price":40.0,"currency_code":"USD","in_stock":true},{"title":"3 Units","offer_id":53132973769068,"sku":"PNP-3U","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5 Units","offer_id":53132973801836,"sku":"PNP-5U","price":85.0,"currency_code":"USD","in_stock":true},{"title":"25 Units","offer_id":53363475415404,"sku":"PNP-25U","price":300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/PNP-1U.jpg?v=1773175902"},{"product_id":"benchtop-nitrate-reagent-kit","title":"Benchtop Nitrate Test Kit","description":"\u003ch2\u003eQuantitative Nitrate Analysis for Laboratory Use\u003c\/h2\u003e\n\u003cp\u003eNECi's Benchtop Nitrate Test Kit delivers precise, enzyme-based nitrate quantification for any aqueous sample — from wastewater to soil and plant extracts. The test tube format uses recombinant Nitrate Reductase (NaR) to reduce nitrate (NO₃⁻) to nitrite (NO₂⁻) via NADH, which is then quantified colorimetrically at 540 nm ± 20 nm using your colorimeter or spectrophotometer. No toxic cadmium reduction required.\u003c\/p\u003e\n\u003ch2\u003eAvailable Ranges\u003c\/h2\u003e\n\u003cp\u003eNitrate is reported in different units depending on your field of use and where you live.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eNTK Test Tube Kits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Nitrate-N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Nitrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eµM Nitrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eStandard Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.5 - 10.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e2.0 - 44\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e36 - 714\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eLow Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.05 - 1.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.2 - 4.4\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e3.6 - 71.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eKit Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e25 Sample or 100 Sample Analysis\u003c\/li\u003e\n\u003cli\u003eChoose either Freshwater or Saltwater Analysis\u003c\/li\u003e\n\u003cli\u003eChoose either Standard Range or Low Range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEnzyme Variants\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Range Freshwater Kit:\u003c\/strong\u003e Contains YNaR (Yeast Nitrate Reductase)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll other variations\u003c\/strong\u003e (Standard Range Saltwater, Low Range Freshwater, Low Range Saltwater): Contain AtNaR (Arabidopsis thaliana Nitrate Reductase)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth enzymes provide the same high-quality, reliable results with the key features listed below.\u003c\/p\u003e\n\u003ch2\u003eMaterials You Will Need\u003c\/h2\u003e\n\u003cp\u003eYou will need a graduated cylinder, variable pipetters, a test tube vortex-type mixer, colorimeter or spectrophotometer with glass or plastic cuvettes, clean and nitrate-free 13 x 100mm test tubes, a timer, nitrate-free deionized water, concentrated HCl, and ice.\u003c\/p\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAssay Buffer\u003c\/li\u003e\n\u003cli\u003eColor Reagent No. 1 Powder (Sulfanilamide)\u003c\/li\u003e\n\u003cli\u003eColor Reagent No. 2 Powder (N-(1-Naphthyl)\u003cwbr\u003eethylenediamine)\u003c\/wbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFreeze Dried NADH\u003c\/li\u003e\n\u003cli\u003eFreeze Dried Nitrate Reductase\u003c\/li\u003e\n\u003cli\u003eEnzyme Diluent\u003c\/li\u003e\n\u003cli\u003e100 ppm Nitrate-N Standard\u003c\/li\u003e\n\u003cli\u003eMicrocentrifuge Tubes\u003c\/li\u003e\n\u003cli\u003eSet of Instructions\u003c\/li\u003e\n\u003cli\u003eNitrate-free Salt Water (only included in saltwater kits)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAnimal origin free\u003c\/li\u003e\n\u003cli\u003eRecombinant enzyme produced according to strict QA\/QC procedures, ensuring lot-to-lot consistency, reliability, and stability\u003c\/li\u003e\n\u003cli\u003ePurified by Immobilized Metal Affinity Chromatography (IMAC) guaranteeing greater than 95% purity\u003c\/li\u003e\n\u003cli\u003eSmall sample volume and enzyme reagents offer sustainability and no-hassle shipping, storage, and disposal for your laboratory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWastewater and environmental water quality monitoring\u003c\/li\u003e\n\u003cli\u003eSoil and plant extract nitrate analysis\u003c\/li\u003e\n\u003cli\u003eAgricultural and food testing\u003c\/li\u003e\n\u003cli\u003eResearch and quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Standard Range Test Tube Format Nitrate Test Kit Instructions: 25 Samples\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-TTSR-25_instructions.pdf\" target=\"_blank\"\u003eStandard Range Test Tube Format Nitrate Test Kit Instructions: 25 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Low Range Test Tube Format Nitrate Test Kit Instructions: 25 Samples\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-TTLR-25_instructions.pdf\" target=\"_blank\"\u003eLow Range Test Tube Format Nitrate Test Kit Instructions: 25 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Standard Range Test Tube Format Nitrate Test Kit Instructions: 100 Samples\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-TTSR-100_instructions.pdf\" target=\"_blank\"\u003eStandard Range Test Tube Format Nitrate Test Kit Instructions: 100 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Low Range Test Tube Format Nitrate Test Kit Instructions: 100 Samples\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-TTLR-100_instructions.pdf\" target=\"_blank\"\u003eLow Range Test Tube Format Nitrate Test Kit Instructions: 100 Samples\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"SDS for Test Tube Format and Microplate Format Nitrate Test Kits\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_Test_Tube_and_Microplate_kits.pdf\" target=\"_blank\"\u003eSDS for Test Tube Format and Microplate Format Nitrate Test Kits\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"25 Sample Analysis \/ Standard Range:  0.5 ppm - 10.0 ppm Nitrate-N \/ Freshwater","offer_id":53132974883180,"sku":"NTK-TTSR-25","price":50.0,"currency_code":"USD","in_stock":true},{"title":"25 Sample Analysis \/ Standard Range:  0.5 ppm - 10.0 ppm Nitrate-N \/ Saltwater","offer_id":53132979536236,"sku":"NTK-TTSR-25S","price":50.0,"currency_code":"USD","in_stock":true},{"title":"25 Sample Analysis \/ Low Range:  0.05 ppm - 1.0 ppm Nitrate-N \/ Freshwater","offer_id":53132974915948,"sku":"NTK-TTLR-25","price":50.0,"currency_code":"USD","in_stock":true},{"title":"25 Sample Analysis \/ Low Range:  0.05 ppm - 1.0 ppm Nitrate-N \/ Saltwater","offer_id":53132979569004,"sku":"NTK-TTLR-25S","price":50.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Standard Range:  0.5 ppm - 10.0 ppm Nitrate-N \/ Freshwater","offer_id":53132975014252,"sku":"NTK-TTSR-100","price":125.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Standard Range:  0.5 ppm - 10.0 ppm Nitrate-N \/ Saltwater","offer_id":53132979667308,"sku":"NTK-TTSR-100S","price":125.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Low Range:  0.05 ppm - 1.0 ppm Nitrate-N \/ Freshwater","offer_id":53132975047020,"sku":"NTK-TTLR-100","price":125.0,"currency_code":"USD","in_stock":true},{"title":"100 Sample Analysis \/ Low Range:  0.05 ppm - 1.0 ppm Nitrate-N \/ Saltwater","offer_id":53132979700076,"sku":"NTK-TTLR-100S","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-TTLR-25.jpg?v=1774021203"},{"product_id":"microplate-format-nitrate-test-kits","title":"Microplate Format Nitrate Test Kits","description":"\u003ch2\u003eQuantitative Nitrate Analysis for High-Throughput Testing\u003c\/h2\u003e\n\u003cp\u003eNECi's Microplate Format Nitrate Test Kit delivers high-throughput nitrate quantification in any aqueous sample using a 96-well microplate. The enzyme-based assay uses recombinant Nitrate Reductase (NaR) to reduce nitrate to nitrite via NADH, which then reacts with color reagents to produce a measurable signal — read at 540 nm against nitrate standards. No cadmium reduction required.\u003c\/p\u003e\n\u003ch2\u003eAvailable Ranges\u003c\/h2\u003e\n\u003cp\u003e*Nitrate is reported in different units depending on your field of use and where you live.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eNTK Microplate Kits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Nitrate-N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eppm Nitrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e\u003cstrong\u003eµM Nitrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eLow Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.05 - 1.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.2 - 4.4\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e3.6 - 71.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eStandard Range Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e0.5 - 10.0\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e2.0 - 44\u003c\/td\u003e\n\u003ctd style=\"width: 20%; border: 1px solid #000; padding: 8px; text-align: center;\"\u003e36 - 714\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eKit Options\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChoose either Low Range or Standard Range\u003c\/li\u003e\n\u003cli\u003eChoose either Freshwater or Saltwater Analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMaterials You Will Need\u003c\/h2\u003e\n\u003cp\u003eYou will need a microplate reader capable of reading at 540nm ± 20nm, variable pipetters (multichannel recommended), nitrate-free deionized water, concentrated HCl, and ice.\u003c\/p\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e96-Well Microplate\u003c\/li\u003e\n\u003cli\u003eAssay Buffer\u003c\/li\u003e\n\u003cli\u003eColor Reagent No. 1 Powder (Sulfanilamide)\u003c\/li\u003e\n\u003cli\u003eColor Reagent No. 2 Powder (N-(1-Naphthyl)\u003cwbr\u003eethylenediamine)\u003c\/wbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFreeze Dried NADH\u003c\/li\u003e\n\u003cli\u003eFreeze Dried Nitrate Reductase\u003c\/li\u003e\n\u003cli\u003eEnzyme Diluent\u003c\/li\u003e\n\u003cli\u003e100 ppm Nitrate-N Standard\u003c\/li\u003e\n\u003cli\u003eMicrocentrifuge Tubes\u003c\/li\u003e\n\u003cli\u003eMulti-channel Pipette Reagent Reservoir\u003c\/li\u003e\n\u003cli\u003eSet of Instructions\u003c\/li\u003e\n\u003cli\u003eNitrate-free Salt Water (only included in saltwater kits)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAnimal origin free\u003c\/li\u003e\n\u003cli\u003eRecombinant enzyme produced according to strict QA\/QC procedures, ensuring lot-to-lot consistency, reliability, and stability\u003c\/li\u003e\n\u003cli\u003ePurified by Immobilized Metal Affinity Chromatography (IMAC) guaranteeing greater than 95% purity\u003c\/li\u003e\n\u003cli\u003eSmall sample volume and enzyme reagents offer sustainability and no-hassle shipping, storage, and disposal for your laboratory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWastewater and environmental water quality monitoring\u003c\/li\u003e\n\u003cli\u003eSoil and plant extract nitrate analysis\u003c\/li\u003e\n\u003cli\u003eAgricultural and food testing\u003c\/li\u003e\n\u003cli\u003eResearch and quality control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Contact Us\" href=\"\/pages\/contact\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Low Range Microplate Format Nitrate Test Kit Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-MPLR_instructions.pdf\" target=\"_blank\"\u003eLow Range Microplate Format Nitrate Test Kit Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Standard Range Microplate Format Nitrate Test Kit Instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-MPSR_instructions.pdf\" target=\"_blank\"\u003eStandard Range Microplate Format Nitrate Test Kit Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"SDS for Test Tube Format and Microplate Format Nitrate Test Kits\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_Test_Tube_and_Microplate_kits.pdf\" target=\"_blank\"\u003eSDS for Test Tube Format and Microplate Format Nitrate Test Kits\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"Low Range: 0.05 - 1.0 ppm Nitrate-N \/ Freshwater","offer_id":53132996215148,"sku":"NTK-MPLR","price":130.0,"currency_code":"USD","in_stock":true},{"title":"Low Range: 0.05 - 1.0 ppm Nitrate-N \/ Saltwater","offer_id":53132996247916,"sku":"NTK-MPLR-S","price":145.0,"currency_code":"USD","in_stock":true},{"title":"Standard Range: 0.5 - 10.0 ppm Nitrate-N \/ Freshwater","offer_id":53132996280684,"sku":"NTK-MPSR","price":130.0,"currency_code":"USD","in_stock":true},{"title":"Standard Range: 0.5 - 10.0 ppm Nitrate-N \/ Saltwater","offer_id":53132996313452,"sku":"NTK-MPSR-S","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NTK-MPLR-S.jpg?v=1773173438"},{"product_id":"atnar-nitrate-reductase","title":"AtNaR Nitrate Reductase (Enzyme Only)","description":"\u003ch2\u003eEPA-Compliant, Cadmium-Free Nitrate Reductase Enzyme for Laboratory Analysis\u003c\/h2\u003e\n\u003cp\u003eAtNaR Nitrate Reductase (Arabidopsis thaliana) was developed by NECi in conjunction with the \u003cstrong\u003eUnited States Geological Survey (USGS)\u003c\/strong\u003e to replace toxic cadmium used in automated colorimetric nitrate determination methods. The enzymatic nitrate reduction approach aligns with procedures referenced by the \u003cstrong\u003eU.S. Environmental Protection Agency (EPA)\u003c\/strong\u003e under \u003ca rel=\"noopener\" title=\"EPA 40 CFR Part 136\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/MUR_2017-PUBLISHED_FED_REGISTER.pdf\" target=\"_blank\"\u003e\u003cstrong\u003e40 CFR Part 136\u003c\/strong\u003e\u003c\/a\u003e for nitrate determination in wastewater and environmental water samples.\u003c\/p\u003e\n\u003cp\u003eThis non-toxic, environmentally benign alternative provides reliable nitrate reduction using water-soluble reagents optimized for laboratory analysis.\u003c\/p\u003e\n\u003ch2\u003eProduct Format\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAtNaR Nitrate Reductase (Enzyme Only)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied as a \u003cstrong\u003efreeze-dried protein glass\u003c\/strong\u003e with enzyme diluent bulb\u003c\/li\u003e\n\u003cli\u003eAnimal origin free\u003c\/li\u003e\n\u003cli\u003eCustom unit sizes available upon request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReaction Principle\u003c\/h2\u003e\n\u003cp\u003eAtNaR catalyzes the reduction of \u003cstrong\u003enitrate (NO₃⁻) to nitrite (NO₂⁻)\u003c\/strong\u003e using \u003cstrong\u003eNADH as the electron donor\u003c\/strong\u003e.\u003cbr\u003eThe generated nitrite can then be quantified using standard colorimetric detection methods.\u003c\/p\u003e\n\u003cp\u003eOne unit will reduce 1.0 μmole of nitrate to nitrite per minute in an NADH system at pH 7 ± 0.5 at 30°C.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe \u0026amp; Non-Toxic:\u003c\/strong\u003e Eliminates hazardous cadmium from your laboratory workflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmentally Friendly:\u003c\/strong\u003e All reagents are water-soluble and environmentally benign\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Stability:\u003c\/strong\u003e Up to 6 months shelf life at room temperature, highly stable in working solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Performance:\u003c\/strong\u003e High specific activity AtNaR with high substrate specificity to reduce false positives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Effective for analysis run between 20 – 45°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSalt Tolerant:\u003c\/strong\u003e Suited for 3%+ NaCl environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e Recombinant enzyme manufactured in \u003cem\u003ePichia pastoris\u003c\/em\u003e under strict QA\/QC procedures for lot-to-lot consistency and reliability\u003c\/li\u003e\n\u003cli\u003eSmall sample size in relation to total assay volume\u003c\/li\u003e\n\u003cli\u003eLittle sample preparation required\u003c\/li\u003e\n\u003cli\u003eNo inhibition by organic or humic acids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eIdeal for laboratories performing nitrate analysis in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrinking water quality testing and regulatory compliance\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring and surface water analysis\u003c\/li\u003e\n\u003cli\u003eWastewater treatment facility testing\u003c\/li\u003e\n\u003cli\u003eGroundwater contamination assessment\u003c\/li\u003e\n\u003cli\u003eAgricultural runoff monitoring\u003c\/li\u003e\n\u003cli\u003eResearch and development laboratories\u003c\/li\u003e\n\u003cli\u003eGovernment and regulatory testing facilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease refer to the \u003ca rel=\"noopener\" title=\"AtNaR Specification Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/AtNaR_Specification_Sheet.pdf\" target=\"_blank\"\u003eAtNaR Specification Sheet\u003c\/a\u003e for more detailed information regarding AtNaR.\u003c\/p\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Contact Us\" href=\"\/pages\/contact\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003ca href=\"mailto:sales@nitrate.com\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"AtNaR Specification Sheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/AtNaR_Specification_Sheet.pdf\" target=\"_blank\"\u003eAtNaR Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"SDS for On-Site Phosphate Test Kits\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_AtNaR_YNaR.pdf\" target=\"_blank\"\u003eSDS for AtNaR + YNaR\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Nitrate Reductase Storage and Reconstitution\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NaR_Storage_and_Reconstitution.pdf\" target=\"_blank\"\u003eNitrate Reductase Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"0.5 Unit","offer_id":53234793316716,"sku":"AtNaR-0.5U","price":15.0,"currency_code":"USD","in_stock":true},{"title":"1 Unit","offer_id":53133006176620,"sku":"AtNaR-1U","price":25.0,"currency_code":"USD","in_stock":true},{"title":"2 Units","offer_id":53133006209388,"sku":"AtNaR-2U","price":45.0,"currency_code":"USD","in_stock":true},{"title":"3 Units","offer_id":53133006242156,"sku":"AtNaR-3U","price":65.0,"currency_code":"USD","in_stock":true},{"title":"5 Units","offer_id":53133006274924,"sku":"AtNaR-5U","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/AtNaR-0.5U_and_AtNaR-1U.jpg?v=1773778341"},{"product_id":"ynar-nitrate-reductase","title":"YNaR Nitrate Reductase (Enzyme Only)","description":"\u003ch2\u003eHigh-Activity Yeast Nitrate Reductase for Cooler Temperature Lab Testing\u003c\/h2\u003e\n\u003cp\u003eYNaR Nitrate Reductase (Yeast) is a high-performance enzyme optimized for nitrate analysis in cooler temperature ranges (2-30°C). With the highest specific activity YNaR on the market, this affinity-purified enzyme delivers reliable, accurate results for laboratories performing nitrate testing in environmental, agricultural, and water quality applications.\u003c\/p\u003e\n\u003cp\u003eThis cost-effective alternative to AtNaR provides excellent performance for samples without high salt content or significant organic\/humic acid interference.\u003c\/p\u003e\n\u003ch2\u003eProduct Format\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eYNaR Nitrate Reductase (Enzyme Only)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied \u003cstrong\u003efreeze-dried protein glass\u003c\/strong\u003e with enzyme diluent bulb\u003c\/li\u003e\n\u003cli\u003eAnimal origin free\u003c\/li\u003e\n\u003cli\u003eCustom unit sizes available upon request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReaction Principle\u003c\/h2\u003e\n\u003cp\u003eYNaR catalyzes the reduction of \u003cstrong\u003enitrate (NO₃⁻) to nitrite (NO₂⁻)\u003c\/strong\u003e using \u003cstrong\u003eNADH as the electron donor\u003c\/strong\u003e.\u003cbr\u003eThe generated nitrite can then be quantified using standard colorimetric detection methods.\u003c\/p\u003e\n\u003cp\u003eOne unit will reduce 1.0 μmole of nitrate to nitrite per minute in an NADH system at pH 7 ± 0.5 at 30°C.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Cooler Temperatures:\u003c\/strong\u003e Effective for analysis run between 2 – 30°C, ideal for laboratories with cooler operating conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective Solution:\u003c\/strong\u003e More economical than AtNaR while maintaining high performance for suitable applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Stability:\u003c\/strong\u003e Up to 6 months shelf life at room temperature, highly stable in working solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Performance:\u003c\/strong\u003e Highest specific activity YNaR on the market with high specificity to reduce false positives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e Affinity-purified enzyme manufactured under strict QA\/QC procedures for lot-to-lot consistency and reliability\u003c\/li\u003e\n\u003cli\u003eSmall sample size in relation to total assay volume\u003c\/li\u003e\n\u003cli\u003eLittle sample preparation required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Considerations:\u003c\/strong\u003e YNaR is partially inhibited by NaCl (salt), organic acids, and humic substances. For samples with high salt content (3%+ NaCl) or significant organic\/humic acid presence, we recommend using \u003ca href=\"\/products\/atnar-nitrate-reductase\" title=\"AtNaR Nitrate Reductase\"\u003eAtNaR Nitrate Reductase\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eYNaR, a yeast-expressed nitrate reductase, is designed for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOn-site testing kits\u003c\/li\u003e\n\u003cli\u003eAgricultural soil and runoff testing\u003c\/li\u003e\n\u003cli\u003eEducational laboratories\u003c\/li\u003e\n\u003cli\u003eNon-regulatory applications\u003c\/li\u003e\n\u003cli\u003eLow temperature measurements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYNaR is robust and economical, but not approved for Clean Water Act or Safe Drinking Water Act reporting. It remains an excellent option for non-regulatory, field-based, or instructional nitrate testing as well as many other applications.\u003c\/p\u003e\n\u003cp\u003ePlease refer to the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/YNaR_Specification_Sheet.pdf\" title=\"YNaR Specification Sheet\" rel=\"noopener\" target=\"_blank\"\u003eYNaR Specification Sheet\u003c\/a\u003e for more detailed information regarding YNaR.\u003c\/p\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/YNaR_Specification_Sheet.pdf\" title=\"YNaR Specification Sheet\" rel=\"noopener\" target=\"_blank\"\u003eYNaR Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_AtNaR_YNaR.pdf\" title=\"SDS Nitrate Reductase Enzymes - AtNaR and YNaR\" rel=\"noopener\" target=\"_blank\"\u003eSDS for AtNaR + YNaR\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NaR_Storage_and_Reconstitution.pdf\" title=\"Nitrate Reductase Enzyme Storage and Reconstitution\" rel=\"noopener\" target=\"_blank\"\u003eNitrate Reductase Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"1 Unit","offer_id":53133011714412,"sku":"YNaR-1U","price":21.0,"currency_code":"USD","in_stock":true},{"title":"2 Units","offer_id":53133011747180,"sku":"YNaR-2U","price":40.0,"currency_code":"USD","in_stock":true},{"title":"3 Units","offer_id":53133011779948,"sku":"YNaR-3U","price":60.0,"currency_code":"USD","in_stock":true},{"title":"5 Units","offer_id":53133011812716,"sku":"YNaR-5U","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/YNaR.jpg?v=1773173001"},{"product_id":"atnar-nitrate-reductase-reagents-kit-for-discrete-analyzers","title":"AtNaR Nitrate Reductase Reagents Kit for Discrete Analyzers","description":"\u003ch2\u003eEPA-Compliant, Cadmium-Free Nitrate Reagent Kit for Discrete Analyzers\u003c\/h2\u003e\n\u003cp\u003eAtNaR Nitrate Reductase Reagent Packs were developed by NECi in conjunction with the \u003cstrong\u003eUnited States Geological Survey (USGS)\u003c\/strong\u003e to replace toxic cadmium used in automated colorimetric nitrate determination methods. The enzymatic nitrate reduction approach aligns with procedures referenced by the \u003cstrong\u003eU.S. Environmental Protection Agency (EPA)\u003c\/strong\u003e under \u003ca title=\"EPA 40 CFR Part 136\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/MUR_2017-PUBLISHED_FED_REGISTER.pdf\"\u003e\u003cstrong\u003e40 CFR Part 136\u003c\/strong\u003e\u003c\/a\u003e for nitrate determination in wastewater and environmental water samples. This method is also included in the California \u003cstrong\u003eEnvironmental Laboratory Accreditation Program (ELAP)\u003c\/strong\u003e Field of Accreditation (FOA) tables, enabling laboratories to pursue accreditation using this cadmium-free method.\u003c\/p\u003e\n\u003cp\u003eThis non-toxic, environmentally benign alternative provides reliable nitrate reduction using water-soluble reagents optimized for discrete analyzers.\u003c\/p\u003e\n\u003ch2\u003eProduct Format\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAtNaR Nitrate Reductase Reagent Pack for Discrete Analyzers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAnimal origin free\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003eThermoFisher Gallery discrete analyzers\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMay be compatible with other discrete analyzers with similar specifications\u003c\/li\u003e\n\u003cli\u003eThis kit contains only enzyme and co-factor. You will also need \u003ca href=\"\/products\/assay-buffer\" title=\"Assay Buffer\"\u003eassay buffer\u003c\/a\u003e and \u003ca href=\"\/products\/Griess-reagents\" title=\"Griess Reagents\"\u003eGriess reagents\u003c\/a\u003e to run the assay. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eReaction Principle\u003c\/h2\u003e\n\u003cp\u003eAtNaR catalyzes the reduction of \u003cstrong\u003enitrate (NO₃⁻) to nitrite (NO₂⁻)\u003c\/strong\u003e using \u003cstrong\u003eNADH as the electron donor\u003c\/strong\u003e.\u003cbr\u003eThe generated nitrite can then be reacted with Griess reagents and quantified using standard colorimetric detection methods.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe \u0026amp; Non-Toxic:\u003c\/strong\u003e Eliminates hazardous cadmium from your laboratory workflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmentally Friendly:\u003c\/strong\u003e All reagents are water-soluble and environmentally benign\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Stability:\u003c\/strong\u003e Up to 6 months shelf life at room temperature, highly stable in working solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Performance:\u003c\/strong\u003e Highest specific activity AtNaR on the market with high specificity to reduce false positives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Effective for analysis run between 20 – 45°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSalt Tolerant:\u003c\/strong\u003e Suited for 3%+ NaCl environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective:\u003c\/strong\u003e Stable working solutions minimize waste and reagent consumption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e Recombinant enzyme manufactured in \u003cem\u003ePichia pastoris\u003c\/em\u003e under strict QA\/QC procedures for lot-to-lot consistency and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS Number:\u003c\/strong\u003e 9013-03-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Form:\u003c\/strong\u003e Freeze-dried protein glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecific Activity:\u003c\/strong\u003e 5-15 units\/mg enzyme protein\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpected Purity Range:\u003c\/strong\u003e Greater than 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range in Assay:\u003c\/strong\u003e 15-45°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Recombinantly manufactured in \u003cem\u003ePichia pastoris\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eIdeal for laboratories performing nitrate analysis in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrinking water quality testing and regulatory compliance\u003c\/li\u003e\n\u003cli\u003eEnvironmental monitoring and surface water analysis\u003c\/li\u003e\n\u003cli\u003eWastewater treatment facility testing\u003c\/li\u003e\n\u003cli\u003eGroundwater contamination assessment\u003c\/li\u003e\n\u003cli\u003eAgricultural runoff monitoring\u003c\/li\u003e\n\u003cli\u003eResearch and development laboratories\u003c\/li\u003e\n\u003cli\u003eGovernment and regulatory testing facilities\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAnalyzer Compatibility\u003c\/h2\u003e\n\u003cp\u003eThese kits are designed for \u003cstrong\u003eThermoFisher Gallery discrete analyzers\u003c\/strong\u003e and may be compatible with other discrete analyzers with similar specifications. Please inquire about reagent packs with detailed instructions for other discrete analyzers, continuous and segmented flow analyzers, and other automated laboratory instruments.\u003c\/p\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStandard DA Kit for 75 assays:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.0 unit AtNaR (freeze-dried)\u003c\/li\u003e\n\u003cli\u003e2.0 mg NADH (solid form)\u003c\/li\u003e\n\u003cli\u003e1 vial enzyme diluent\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Capacity DA Kit for 300+ assays:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3.0 units AtNaR (freeze-dried)\u003c\/li\u003e\n\u003cli\u003e2.0 mg NADH (solid form)\u003c\/li\u003e\n\u003cli\u003e1 vial enzyme diluent\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Conditions \u0026amp; Shelf Life Information*\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eCompatible Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"Assay Buffer (100 mL)\" href=\"products\/assay-buffer-100-ml\" target=\"_blank\"\u003eAssay Buffer (100 mL)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"NADH for Nitrate Reductase Assays\" href=\"products\/nadh-for-nitrate-reductase-assays\" target=\"_blank\"\u003eNADH for Nitrate Reductase Assays\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003cp\u003ePlease inquire about reagent packs with detailed instructions for other discrete analyzers, continuous and segmented flow analyzers, and other automated laboratory instruments.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"AtNaR Nitrate Reductase Reagents Kit for Discrete Analyzers - instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NRPk-DA-1At_instructions.pdf\" target=\"_blank\"\u003eNitrate Reductase Reagent Pack for Tabletop Discrete Analyzers\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"AtNaR Nitrate Reductase Reagents Kit for High Capacity Discrete Analyzers - instructions\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NRPk-HDA-3At_instructions.pdf\" target=\"_blank\"\u003eNitrate Reductase Reagent Pack for High Capacity Discrete Analyzers\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"SDS Nitrate Reductase Reagent Packs\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_Reagent_Packs.pdf\" target=\"_blank\"\u003eSDS for Reagent Packs\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Nitrate Reductase Enzyme Storage and Reconstitution\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NaR_Storage_and_Reconstitution.pdf\" target=\"_blank\"\u003eNitrate Reductase Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"High Capacity Kit for 300+ Assays","offer_id":53133033832812,"sku":"NRPk-HDA-3At","price":90.0,"currency_code":"USD","in_stock":true},{"title":"Standard DA Kit for 75 Assays","offer_id":53133033800044,"sku":"NRPk-DA-1At","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NRPk-HDA-3At.jpg?v=1773174585"},{"product_id":"nitrate-reductase-diluent-bulb-pack","title":"Nitrate Reductase Diluent Bulb Pack","description":"\u003ch2\u003eOptimized Enzyme Diluent for Maximum Nitrate Reductase Stability\u003c\/h2\u003e\n\u003cp\u003eThis optimized nitrate reductase storage buffer is always recommended for reconstituting NECi's nitrate reductase for usage and storage purposes. These diluent bulbs may be stored at room temperature, but we recommend storing at 4°C.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOptimized storage buffer with 25% glycerol for enzyme stability\u003c\/li\u003e\n\u003cli\u003e5 diluent bulbs per pack, 1 ml per bulb\u003c\/li\u003e\n\u003cli\u003eDesigned for multi-unit enzyme vials (2, 3, or 5 units per vial)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsage Instructions\u003c\/h2\u003e\n\u003cp\u003eWhen ordering nitrate reductase in 2, 3, or 5 units per vial, use 1 enzyme diluent bulb per unit to achieve 1 unit enzyme per ml of solution. This is the recommended concentration for most nitrate assays.\u003c\/p\u003e\n\u003ch2\u003eStorage Conditions\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e*Shelf life guaranteed if stored as directed below\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cbr\u003e\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-80°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e-20°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003e4°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eRT: 20°C – 25°C\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #000; padding: 8px;\"\u003eAbove 40°C\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eFreeze-Dried\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e3+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e2+ Years\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6 months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e\u003cstrong\u003eIn Solution*\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e1+ Year\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003e6+ months\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eUp to 1 week\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #000; padding: 8px;\"\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e* Enzyme provided with enzyme diluent working solution, contains 25% glycerol\u003c\/p\u003e\n\u003ch2\u003eCompatible Products\u003c\/h2\u003e\n\u003cp\u003eThis diluent is designed for use with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/atnar-nitrate-reductase\" title=\"AtNaR Nitrate Reductase Enzyme\" rel=\"noopener\"\u003eAtNaR Nitrate Reductase Enzyme\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ynar-nitrate-reductase\" title=\"YNaR Nitrate Reductase Enzyme\" rel=\"noopener\"\u003eYNaR Nitrate Reductase Enzyme\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NaR_Storage_and_Reconstitution.pdf\" title=\"Nitrate Reductase Storage and Reconstitution\" rel=\"noopener\" target=\"_blank\"\u003eNitrate Reductase Storage and Reconstitution\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_Assay_Buffer.pdf\" title=\"SDS for Assay Buffer with Glycerol\" rel=\"noopener\" target=\"_blank\"\u003eSDS for Assay Buffer with Glycerol\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"Default Title","offer_id":53133039436140,"sku":"NaR-EDB-05","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NaR-EDB-05.jpg?v=1773772054"},{"product_id":"assay-buffer","title":"Assay Buffer","description":"\u003ch2\u003eBuffer Optimized for Nitrate Reductase Assays\u003c\/h2\u003e\n\u003cp\u003eNECi's Assay Buffer is specifically formulated for use with nitrate reductase assays, providing optimal pH and ionic conditions for accurate nitrate analysis. This buffer ensures consistent, reliable results across all NECi nitrate testing products.\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e28 mM Potassium Phosphate @ pH 7.5\u003c\/li\u003e\n\u003cli\u003e0.025 mM EDTA (Ethylenediaminetetraacetic acid)\u003c\/li\u003e\n\u003cli\u003e100 mL total volume, packaged in 2 bottles\u003c\/li\u003e\n\u003cli\u003e500 mL total volume, packaged in 1 bottle\u003c\/li\u003e\n\u003cli\u003e1000 mL total volume, packaged in 1 bottle\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Feature\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFormulated specifically for use with NECi's Nitrate Reductase Assay\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage Conditions\u003c\/h2\u003e\n\u003cp\u003eRefrigerate at 4°C for longest shelf life.\u003c\/p\u003e\n\u003ch2\u003eCompatible Products\u003c\/h2\u003e\n\u003cp\u003eThis assay buffer is designed for use with the following NECi nitrate testing products:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003ca href=\"\/products\/atnar-nitrate-reductase\" title=\"AtNaR Nitrate Reductase Enzyme\" rel=\"noopener\"\u003eAtNaR Nitrate Reductase Enzyme\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003ca href=\"\/products\/ynar-nitrate-reductase\" title=\"YNaR Nitrate Reductase Enzyme\" rel=\"noopener\"\u003eYNaR Nitrate Reductase Enzyme\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/benchtop-test-kits\" title=\"Lab Kits\" rel=\"noopener\"\u003eLab Kits\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" target=\"_blank\" title=\"Contact Us\" rel=\"noopener\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_Assay_Buffer.pdf\" title=\"SDS for Assay Buffer\" rel=\"noopener\" target=\"_blank\"\u003eSDS for Assay Buffer\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"100 ml","offer_id":53765281546604,"sku":"E-ABN-100","price":25.0,"currency_code":"USD","in_stock":true},{"title":"500 ml","offer_id":53765281579372,"sku":"E-ABN-500","price":30.0,"currency_code":"USD","in_stock":true},{"title":"1000 ml","offer_id":53765281612140,"sku":"E-ABN-1L","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/E-ABN.jpg?v=1774020512"},{"product_id":"nadh-for-nitrate-reductase-assays","title":"NADH for Nitrate Reductase Assays","description":"\u003ch2\u003ePre-Measured, High-Purity NADH Cofactor for Nitrate Reductase Assays\u003c\/h2\u003e\n\u003cp\u003eNADH (β-Nicotinamide adenine dinucleotide, reduced form) is the essential electron-donating cofactor required for nitrate detection assays using AtNaR and YNaR nitrate reductase enzymes. It drives the enzymatic reduction of nitrate (NO₃⁻) to nitrite (NO₂⁻), enabling downstream colorimetric quantification.\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003eAvailable in two pre-measured sizes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.0 mg NADH\u003c\/strong\u003e — For standard nitrate assays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.4 mg NADH\u003c\/strong\u003e — For reagent pack applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eChemical Name: β-Nicotinamide adenine dinucleotide, reduced disodium salt\u003c\/li\u003e\n\u003cli\u003eForm: Freeze-dried powder\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEssential cofactor for nitrate reductase enzymatic assays\u003c\/li\u003e\n\u003cli\u003eHigh purity for reliable, consistent results\u003c\/li\u003e\n\u003cli\u003eFreeze-dried and vacuum-sealed for extended shelf life and stability\u003c\/li\u003e\n\u003cli\u003ePre-measured for convenience and accuracy\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with all NECi nitrate testing products\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsage \u0026amp; Reconstitution\u003c\/h2\u003e\n\u003cp\u003eNADH must be reconstituted before use in nitrate assays. Follow the instructions provided with your specific nitrate testing kit or reagent pack for proper reconstitution procedures and final concentrations.\u003c\/p\u003e\n\u003cp\u003eFor detailed reconstitution instructions, refer to the NADH Reconstitution guide in the Resources section below.\u003c\/p\u003e\n\u003ch2\u003eStorage Conditions\u003c\/h2\u003e\n\u003cp\u003eStore freeze-dried NADH at -20°C for optimal stability. Once reconstituted, use immediately or store according to kit instructions. Avoid repeated freeze-thaw cycles.\u003c\/p\u003e\n\u003ch2\u003eCompatible Products\u003c\/h2\u003e\n\u003cp\u003eThis NADH is designed for use with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"Enzyme \u0026amp; Reagent Packs\" href=\"\/collections\/reagent-packs\" target=\"_blank\"\u003eAtNaR and YNaR Enzyme Reagent Packs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" title=\"Lab Kits\" href=\"\/collections\/benchtop-test-kits\" target=\"_blank\"\u003eBenchtop Nitrate Test Kits\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\" title=\"Contact Us\" rel=\"noopener\" target=\"_blank\"\u003eContact us\u003c\/a\u003e to inquire about bulk quantity discounts or wholesale orders, or to request a quote for international orders.\u003c\/p\u003e\n\u003ch2\u003eResources \u0026amp; Downloads\u003c\/h2\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"NADH Reconstitution and Use for AtNaR-RPk and YNaR-RPk\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NADH_Reconstitution_in_NaR-RPks.pdf\" target=\"_blank\"\u003eNADH Reconstitution and Use for AtNaR-RPk and YNaR-RPk\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/SDS_NADH.pdf\" title=\"SDS for NADH\" rel=\"noopener\" target=\"_blank\"\u003eSDS for NADH\u003c\/a\u003e\u003c\/p\u003e","brand":"NECi","offers":[{"title":"2.0 mg","offer_id":53236736885100,"sku":"NADH-2.0","price":7.5,"currency_code":"USD","in_stock":true},{"title":"2.4 mg","offer_id":53236736917868,"sku":"NADH-2.4","price":7.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/files\/NADH.jpg?v=1773175690"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/5830\/7948\/collections\/image013.jpg?v=1778172323","url":"https:\/\/nitrate.com\/collections\/laboratory.oembed","provider":"NECi","version":"1.0","type":"link"}