Soil Nitrate Test Kit

Soil Nitrate Test Kit

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Product ID: NTK-S

Nitrate for Maximum Yield and Minimal Fertilizer Cost

Quick and Reliable Results, Easy to Use, Environmentally Benign

For high crop yield, enough Nitrate needs to be available in the soil, while over-application results in wasted fertilizer.  Make best use of manures in NMP compliance, practice good environmental stewardship to prevent groundwater nitrate runoff.  Use this kit for pre-sidedress soil nitrate testing for appropriate nutrient application.

This kit will detect 0 ppm - 50 ppm Nitrate-N (50 ppm Nitrate-N = 250 lb N/acre)

Choose from kits for nitrate analysis of 5, 10, 25, or 50 samples. Obtain results in less than one hour.  All you need is a pair of scissors, pen, and marker.  Kit includes everything you need to test and is easy to use, no lab training is required.  

Two Ways to Improve Your Nitrate Testing Experience

Use our New Handheld Photometer

Check out our new handheld photometer which displays and tracks nitrate and phosphate results digitally on Android mobile devices.  Obtain near lab-quality data without needing laboratory equipment or experience.  Our Introductory Photometer Package is complete with the photometer, instructions, and a 10-sample test kit pack of your choice.  Use your own Android mobile device, or add-on a control pad tablet for tracking, storage, and sharing of data.

Download the Free Nitrate Color Slider App

For a free interactive color-matching tool, use our free nitrate color slider app for easier visual analysis of colorimetric results.  Instead of using the color chart provided in the instructions, simply match the color on the screen with the color of each sample for more precise numerical values.  This app is available Online and in theGoogle Play store.

Nitrate Color Slider Google Play Store


Additional Information


Number of tests - Product ID

05 tests - NTK-S-05

10 tests - NTK-S-10

25 tests - NTK-S-25

50 tests - NTK-S-50

Related Documents

Soil Nitrate Test Kit Instructions

Data Sheet for Soil

SDS for On-site Field Test Kits

Each Kit Contains:

  • Sample Collection Tubes 
  • Large Measuring Spoon(s)
  • Squeeze Bulbs of Buffer
  • Squeeze Bulb(s) of Nitrate Standard
  • Reaction Cuvettes (contains enzyme)
  • Pipettes
  • Ampoules of Color Reagent Powders
  • Cardboard Cuvette Holder(s)
  • Set of Instructions

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.