Tests for Total Hardness Total Chlorine Free Chlorine pH Total Alkalinity and Cyanuric Acid (Stabilizer). Just dip an AquaChek Select test strip in your pool or spa water for one second and remove it immediately. You get results in seconds. The Select Refill Kit contains a refill bottle of 50 test strips plus a color comparator insert. Youll find this an economical way to test both pool and spa water. To keep your pool at its best test at each end a minimum of twice a week and test your spa before each use. Its also a good idea to write down your results each time you test. Tests For: Total Hardness Total Chlorine Total Bromine Free Chlorine pH Total Alkalinity Cyanuric Acid (Stabilizer)..
