HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC available at Coral Passion in Essex

HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC

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The HI-781 Nitrate Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of nitrate colorimetrically.

The HI-781 is designed specifically to measure low levels of nitrate in a saltwater aquarium. The 0.00 to 5.00 range is ideal for reef aquarium maintenance.


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