AquaChek Chlorine 4-in-1 + ShockChek Test Kit, 50 + 10 Strips

The AquaChek Chlorine 4-in-1 + ShockChek Test Kit combines routine pool and spa water testing with a separate test that indicates when the water should be shocked or super-chlorinated.Product Information Includes 50 Chlorine 4-in-1 test strips Includes 10 ShockChek test strips Tests free chlorine, pH, total alkalinity, and stabilizer ShockChek compares total chlorine with free chlorine to indicate when shocking is needed