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