Product features: 7 in 1 swimming pool, hot tub water quality test strips. Total Hardness, Total Chlorine, Bromine, Free Chlorine, pH, Alkalinity, Cyanuric Acid Test on both ends of the pool twice a week for best results. How to use: 1. Submerge the pool test strip dip in the water for 2s. 2. Take it out and wait for 15 seconds. 3. Compare the pool test strip to the color chart on the bottle.
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