Nitrite Test (0.0-3.3 mg/l) for Fresh and Saltwater - 75 tests

Nutrafin Nitrite Test Kit for Freshwater and Saltwater Measures nitrite levels in fresh and saltwater aquariums. Should be tested on a weekly basis, as nitrite is toxic and potentially lethal for fish. Provides up to 75 tests. Testing range is 0.0-3.3 mg/L. AirFilters.com This Nitrite Test Kit measures the nitrite levels in fresh or saltwater aquariums. Nitrite should be tested on a weekly basis, as it is a toxic and potentially lethal nitrogen compound for fish. It provides up to 75 tests, so purchase a kit for your aquarium today!