Safe Swim® reagent - Calcium Hardness - 50 strips

Safe Swim® Calcium Hardness Strips to monitor calcium hardness levels from 20-700 ppm, effectively evaluating water balance. Maintaining the correct calcium level is essential to prevent scaling and cloudiness (if levels are too high) or corrosion of equipment and surfaces (if levels are too low).

Works only with Safe Swim® - digital water testing for pools and hot tubs  

50 reagent tests per bottle.