Nitrate Test Strips for Agriculture & Hydroponics

SKU: 33817-NN

$20.49USD or lower Each

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Monitor nitrate and nitrite levels in farm irrigation, hydroponic nutrient solutions, and soil runoff with quick, reliable Indigo® Nitrite-Nitrate test strips.

Nitrate and nitrite levels are key indicators of nitrogen availability and nutrient balance in agricultural and hydroponic systems. Indigo® Nitrate-Nitrite Test Strips provide a fast, practical way to monitor irrigation water, hydroponic nutrient solutions, and runoff before excess nitrogen affects crop health or system performance. Simple dip-and-read testing allows growers to make timely fertilizer and nutrient adjustments without instruments, reagents, or laboratory delays.

These nitrate and nitrite test strips are widely used in field agriculture, controlled-environment hydroponics, and greenhouse production to support fertilizer optimization, nutrient efficiency, and environmental stewardship. Ideal for routine screening and process checks, they help identify nitrate accumulation, incomplete nitrification, and nutrient losses that contribute to crop stress or off-site pollution. Common applications include irrigation water testing, nutrient solution management, leachate and runoff screening, and sustainability or extension education programs.

Applications in Agriculture & Hydroponics

  • Fertilizer Management: Ensure crops receive adequate nitrogen without waste.
  • Hydroponics: Monitor nutrient solutions for optimal plant uptake.
  • Soil Runoff Monitoring: Detect excess nitrate/nitrite leaching into groundwater or surface water.
  • Sustainability Education: Demonstrate nutrient cycling and water stewardship in classroom settings.

Comparison Table for Test Strips vs. Probes

Method Advantages Limitations
Nitrate/Nitrite Test Strips Fast, inexpensive, portable; ideal for quick checks in fields or greenhouses. Approximate results; less precise than digital sensors.
Electronic Probes Continuous monitoring, higher precision; integrates with automated hydroponic systems. Expensive, requires calibration and maintenance.

Importance of Indigo® Nitrate-Nitrate Test Strip Documentation

Lot-specific documentation, defined shelf life, and consistent manufacturing support use in commercial farming operations, research trials, and sustainability programs where repeatability, traceability, and QA review are required—even for rapid field screening methods.

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

Tips for Best Results

  • Collect water samples from representative points (e.g., runoff outlet, irrigation inlet, hydroponic tank).
  • Test at consistent times (before/after fertilization cycles).
  • Record results to track trends in nitrate/nitrite levels.

Learning Outcomes / Key Features

Discipline Learning Outcomes / Key Features
Agricultural Science Understand nitrogen uptake in crops; apply test results to optimize fertilization.
Environmental Science Investigate nitrate runoff and eutrophication impacts on waterways.
Biology & Ecology Link nutrient cycling to ecosystem health and sustainability practices.
Chemistry Explore redox chemistry of nitrate and nitrite transformations.
Related information or images
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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Frequently Asked Questions

FAQ for Nitrate Test Strips for Agriculture & Hydroponics

No, they test nitrate and nitrite in water. To check soil, prepare a water extract by mixing soil with distilled water and filtering.

Weekly during fertilization periods is recommended; more frequently if crop stress or algal growth is observed.

Test strips are excellent for field screening. For official compliance, lab or probe-based methods may be required.

Yes, though high salt concentrations may slightly affect readings. Consistency in testing conditions helps ensure accuracy.