Tests for nitrite in freshwater & saltwater aquariums. Nitrite, toxic to fish, is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. 180 tests per kit.
Feature
Contains 180 tests Reads nitrite levels from 0 to 5 ppm Contains color chart, clear instructions and glass tube(s) Brand : API Item model num : 26 MPN(PartNumber) : 26 EAN : 0798813025166