HI781 Saltwater Low Range Nitrate Checker

Get highly accurate results with the HI781 Marine Nitrate Low Range Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This nitrate tester’s compact design fits in your pocket or stores easily in your shop.

Features at-a-glance:

Easier to use and more accurate than chemical test kits.
One-button operation makes getting your nitrate results simple.
Great for saltwater aquariums.