Soil Nitrate & Nitrite Test Strips

SKU: 33817-NN

$20.49USD or lower Each

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Measure nitrate and nitrite levels in soil samples from your garden, lawn or farm with Indigo® Nitrite-Nitrate test strips. Useful also in runoff monitoring, and environmental science teaching.

Nitrate and nitrite measurements in soil extracts provide insight into nitrogen availability, fertilizer efficiency, and nutrient cycling dynamics. Indigo® Nitrite-Nitrate Test Strips offer a fast, practical method for screening dissolved nitrate and nitrite in garden, lawn, and agricultural soil samples. By identifying excess or depleted nitrogen levels, these strips help users assess crop uptake, microbial activity, and the potential for nutrient loss through leaching or runoff.

We've been selling nitrate-nitrite test strips since 2009. Buy fully documented Indigo® nitrate-nitrite test strips, 50 strips/vial. Guaranteed 3 year shelf life (dated back from expiration date "yyyy.mm.dd").
Details Specs Docs Reviews
Details
Discipline Learning Outcomes / Key Features
Agronomy Apply nitrate/nitrite testing to assess fertilizer use efficiency and soil fertility management.
Environmental Science Link soil nitrate levels to groundwater contamination, eutrophication, and sustainability issues.
Chemistry Understand the chemical principles of nitrate reduction and its detection using test strips.
Education Use soil extract testing as a hands-on experiment for teaching nutrient cycling and pollution impacts.

Tips for Best Results

  • Always test a soil-water extract, not raw soil. A common method is shaking 10 g of soil with 50 mL distilled water, then filtering or allowing to settle.
  • Take samples from several locations for a representative reading.
  • Compare readings across treated vs. untreated plots to study fertilizer effects.
  • Use results as a screening tool, then confirm with lab-based soil tests if precise values are required.
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Specifications

This Indigo® test strip indicates the presence of nitrate & nitrite. Results for ranges shown below can be read in 30 seconds.

  • Nitrate is measured in increments of 10, 25, 50, 100, 250, & 500ppm
  • Nitrite is measured in increments of 1, 5, 10, & 25ppm
  • The number of strips (50) vial is approximate.
  • These strips have a guaranteed shelf of 3 years from date of manufacture (indicated by expiration date).
  • These strips are extremely sensitive to airborne humidity.
  • Reseal the desiccant lined bottle immediately after removing a strip to ensure 3 year shelf life.
  • Vial must be kept tightly sealed & kept at typical room temperatures.
Documentation

A Certificate of Conformance is available on request after shipment.
Indigo® pH test strips are made in USA & calibrated with NIST standards.

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Nitrite Test Strips 25ppm Nitrate 500ppm Stability Statement Indigo Nitrite Test Strips 25ppm Nitrate 500ppm Certificate of Analysis Indigo Nitrite Test Strips 25ppm Nitrate 500ppm SDS
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