Measures phosphate levels reliably and accurately -for fresh and marine water aquariums -large range -good long-term stability

Reliably and accurately measure nitrite levels.

This Hanna pocket photometer is specially designed for the measurement of phosphate in fresh and salt water. The Hanna water tester has a very clear digital readable display and is simple to operate with one control button. With this Hanna Pocket Photometer, you never have to fiddle with test strips and compare colors again. The digital measurement is more accurate and very easy to read....