Nitrate Profi-Test. This test kit is designed to detect nitrate levels in aquariums, particularly beneficial for reef tanks where low nitrate levels are essential. The Salifert Test Kit provides accurate results in less than 3 minutes without interference from amines. It is capable of testing a nitrate concentration range from 0.2 to 100 mg/L, sufficient for 50 tests, and offers both low and medium range options.