Aquacheck 4-1 Chlorine Test Strips

Aquacheck 4 in 1 chlorine test strips. These strips test; Free Chlorine, PH, ALkalinity, and Cyanuric Acie (chlorine stabilizer)

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