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Hanna Pocket Checker - Nitrite HR

Ideal for marine, salt and fresh water aquariums


The HI-708 Checker is a simple, accurate, and cost effective way to measure high ranges of nitrite

Designed as a more accurate alternative to chemical test kits, the HI 708 provides quick, accurate results in four easy steps (see below).

The HI-708 uses an adaptation of the Ferrous Sulphate method. The reaction between nitrite and the reagent causes a greenish/brown tint in the sample.

Also ideal for:

  • Water Quality
  • Education
  • Aquariums (marine, salt and fresh water)
  • Wastewater
  • Environmental


  • Small palm-sized design
  • Accurate from ±3 ppm ±5% of reading
  • Dedicated to a single parameter
  • Uses a single AAA battery
  • Auto Power Off after 10 minutes in inactivity
  • Built-in timer for timed reaction readings