FREE Swimming Pool Chlorine & PH Test Strips
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The U.S. Centers for Disease Control and Prevention (CDC) recommends swimmers use portable test strips to check for adequate chlorine and proper pH of pool water.
https://waterandhealth.org/healthy-pools/pool-test-kit-chlorine-ph-strips/
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What are the best tools for cleaning pool water?
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Can these products be added to the water or are they for filter cleaners?
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@avann these are just for testing with water in the small tubular case
they tell you what additive your pool needs
