With the Aquarium Water Testing Strips, test for alkalinity, chlorine, hardness, nitrate, nitrite and pH. Do all of this with one single, easy-to-use test strip.
Test for alkalinity, chlorine, hardness, nitrate, nitrite and pH, all with one single, easy-to-use test strip. Compare the color of each test pad after 30 seconds to determine alkalinity, chlorine, hardness, nitrite and pH. Nitrate results obtained in 60 seconds. Each bottle contains 25 test strips plus color comparison charts.