NEW Chlorine 4 Way Test Strips 50 Leisure Time Spa

Chlorine 4-Way Test Strips for Spa & Hot Tub Easy-to-read strips test spa water pH, total alkalinity, calcium hardness and chlorine levels. Features: Applications: Normal: Dip strip in water one time. Compare test results to chart on back of bottle. Tips: Low calcium hardness levels can cause foam and corrosive water conditions, so use a strip that includes the calcium hardness test. Compatible With: Chlorine, bromine and ozone sanitizers.