Amazon.com : Jellas Water Test Strips, 6-in-1 Pool and ...
【One Test for 6 Parameters】 Analyzes six chemical factors of water quality: total Chlorine, free chlorine/bromine, pH, total alkalinity, cyanuric acid, total hardness at one time. 【Moisture-proof 50ct Test Strips】Total 50 (5x10 ) water test strips, seal well with 5 individual moisture-proof packages in one bottle, all these strips will last for use 2 years.
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