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HANNA Marine Nitrate Low Range Handheld Colorimeter


The Checker®HC handheld colorimeter is supplied with:

  • Sample cuvette and cap (2)
  • Marine Nitrate Low Range reagent starter kit (reagents for 25 tests)
  • Filter paper (25)
  • Filter holder (1)
  • Mixing vial and cap (1)
  • 5 mL syringe with tip (1)
  • 10 mL syringe with tip (1)
  • 1.5V AAA Alkaline battery (1)
  • Instruction manual
  • Nitrate is a by-product of the Nitrogen cycle. Excessive amounts of Nitrates in a reef aquarium can promote the growth of undesirable organisms including algae and dinoflagellates, while insufficient amounts can lead to starvation in which SPS, and other corals, will show signs including the loss of colour and paleness.

  • Ideal for aquariums and marine biology
  • Easier to use and more accurate than chemical test kits
  • Small size, big convenience
  • Specifications

    Specifications list


    Range 0.00 to 5.00 ppm (mg/L) NO₃-
    Resolution 0.01 ppm
    Accuracy @ 25°C/77°F ±0.25 ppm ±2% of reading
    Light Source LED @ 525 nm
    Light Detector silicon photocell
    Method zinc reduction method
    Auto-off after ten minutes of non-use
    Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
    Battery Type (1) 1.5V AAA
    Ordering Information HI-781 Checker HC is supplied with sample cuvettes with caps (2), nitrate reagent starter kit (reagents for 25 tests), filter holder, 10 mL syringe, 5 mL syringe with tip, mixing vial with cap, battery, and instructions.
    Accessories HI-781-25 Reagent set for 25 tests
    HI-781-11 Calibration set