The JBL Nitrate test gives a precise and quick result of the nitrate (NO3) content in freshwater and saltwater aquariums.
If the nitrate content is high, it can lead to unwanted algae growth.

Measuring range from 1.0 to 240 mg/l nitrate.
Color change with 11 color changes from yellow to orange-red.
Recommended level max.: 50 mg/l nitrate in fresh water.