Nitrate Test Kits by NADH Disappearance

Nitrate Test Kit by NADH Disappearance: 100 Sample Analysis

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Product ID: NTK-ND-25 and NTK-ND-100

Use this kit to obtain quantitative nitrate data within standard range by measuring NADH Disappearance.  Measures nitrate content in food extracts and other aqueous extracts or samples.  Confirmed by NECi to provide accurate results when used in conjunction with Carrez's Reagent in meat, milk, and whey.  Use your standard food sample preparation method or see product documents for more information.

NADH Disappearance Nitrate Reductase Based Test Kit Available In:

  • Standard Range (0.5 ppm - 10.0 ppm Nitrate-N)
  • Choose from Analysis of 25 or 100 Samples

NECi Nitrate Reductase (AtNaR):

  • Recombinant AtNaR fermented according to strict QA/QC procedures with reagent grade water and analytical grade sugars and salts, ensuring lot-to-lot consistency, reliablility, and stability 

  • Purified to Homegeneity by Immobilized Metal Affinity Chromatography Guarantees Greater than 95% Purity

  • Freeze Dried Stable Indefinitely at -20°C, 2 Years at 4°C, 1 Year at 25°C (RT)

  • Stable in Working Solution for 1 Year at -20°C, 2 Weeks at 4°C, 8 Hours at 25°C (RT)

  • Small Sample Volume and Enzyme Reagents Offer Sustainability and No Hassle Shipping, Storage and Disposal for Your Laboratory 

Additional Information


Number of tests - Standard Range ID

25 tests - NTK-ND-25

100 tests - NTK-ND-100

Related Documents

Enzyme Storage Conditions

Measuring Nitrate by NADH Disappearance Test Kit Instructions: 25 Samples

Measuring Nitrate by NADH Disappearance Test Kit Instructions: 100 Samples

SDS for Test Tube Format and Microplate Format Nitrate Test Kits

You will need graduated cylinders, variable pipetters, spectrophotometer capable of reading at 340 nm± 20nm, a timer, dionized nitrate-free water, ice, and extra cuvettes.

Each Kit Contains:

  • Assay Buffer (liquid)
  • NADH (freeze-dried)
  • Nitrate Reductase (freeze-dried)
  • Enzyme Diluent
  • 100ppm Nitrate-N Standard
  • Microcentrifuge Tubes
  • Cuvettes (UV compatible)

For more detailed information about this kit, please view the instruction sheet.

For technical support regarding kits, contact

For inquiries regarding orders, or to request a custom quotation for international orders, contact

Kits purchased to use in classroom demonstrations or projects may be eligible for discounts. Complete survey HERE

Call 1-888-NITRATE or (906)-296-1130 for answers, support, and to make comments.