Drinking Water Nitrite Nitrate Test Strips

SKU: 33817-NN

$20.49USD or lower Each

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Measure nitrate and nitrite levels in drinking water, wells, and private supplies quickly & easily with Indigo® Nitrite-Nitrate test strips. Meet EPA/WHO guidelines and explore links to public health and environmental safety.

Nitrate and nitrite contamination in drinking water is a well-recognized public health concern, particularly for private wells and rural water supplies influenced by agriculture or septic systems. Indigo® Nitrite-Nitrate Test Strips provide a fast, accessible way to screen drinking water, wells, and household supplies for nitrogen contamination relative to established EPA and WHO guideline values. Rapid screening helps users identify potential risks early and determine when confirmatory laboratory testing or corrective action may be warranted.

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
Chemistry Understand nitrate/nitrite solubility in water and their role as common groundwater contaminants.
Biology Connect nitrate/nitrite ingestion to human health effects such as methemoglobinemia (“blue baby syndrome”).
Environmental Science Relate agricultural runoff and septic system leakage to groundwater nitrate levels and drinking water safety.
Public Health Recognize WHO and EPA nitrate/nitrite limits for drinking water and their role in regulatory compliance.
Education Demonstrate real-world applications of water chemistry in classroom labs, showing links between science and public safety.

Tips for Best Results

  • Use clean containers: Always collect water samples in clean, clear glass or plastic cups to avoid contamination.
  • Follow timing exactly: Immerse the strip fully, remove promptly, and compare colors within the recommended time (usually 30–60 seconds).
  • Good lighting matters: Interpret colors in natural daylight or under a bright white light source to avoid misreads.
  • Avoid touching pads: Oils or residues from your fingers can affect the color reaction. Handle strips by the end only.
  • Test regularly: For private wells, test at least once a year, and more often if located in agricultural regions or after flooding.
  • Confirm borderline results: If your readings approach EPA/WHO limits, send a sample to a certified laboratory for verification.
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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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