4-in-1 Chlorine - 50 Test Strips

Tests for Free Chlorine, Cyanuric Acid, pH and Total Alkalinity 

Just dip an AquaChek Yellow strip in your pool or spa water to get instant results! To keep your pool at its best, test at each end at least twice a week, and test your spa before each use. It's also a good idea to write down your results each time you test, so you can track changes.

50 strips per bottle.