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Nitrate Test Kit Replacement Reagents (100 tests)


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The HI3874-100 are replacement reagents for the colorimetric determination of nitrate (as NO3--N) with the HI3874 Nitrate Test Kit. There are enough reagents for approximately 100 tests to be used with Hanna’s test kit. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.
  • Pre-made reagents for ease of use
  • Prepared with high purity chemicals
  • Marked with expiration date and lot number for traceability


The HI3874-100 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate nitrate measurements with the chemical test kit. These reagents follow the cadmium reduction method to determine nitrate concentration as nitrate-nitrogen (NO3--N).


For determination of nitrate, nitrate ions in a sample are reduced to nitrite ions in the presence of cadmium. The reaction between the nitrite ions and the reagent causes an orange colored complex to form; the greater the concentration, the deeper the color. A color comparator cube is included for an accurate, side-by-side, visual analysis to determine nitrate concentration. These reagents are designed to be used with samples that have an expected nitrate range of 0 to 50 mg/L (ppm) NO3--N.


Package packets
Method cadmium reduction
Number of Tests 100
Proposition 65

WARNING: This product can expose you to chemicals including cadmium, which is known to the State of California to cause cancer and birth defects or other reproductive harm.


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