AquaChek 4-in-1 Chlorine Test Strips

AquaChek Chlroine 4-in-1 Strips test for: Free Chlorine, PH, Alkalinity, and Cyanuric Acid (chlorine stabilizer).

Simple and easy to use just dip them in the water for 2 seconds, pull out of water slowly, hold out straight for 15 seconds and match up the colors on the back of the bottle.