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Cyanuric Acid, Total Dissolved Solids (TDS), High and Low Range Hardness. AquaChek Pro II is the perfect supplement to AquaChek Pro. Test for 3 parameters that do not need to be tested weekly - cyanuric acid, total dissolved solids (TDS) and total hardness. Get 4 important test results in just seconds! Dip an AquaChek Pro II strip in your pool or spa water for two seconds and remove it immediately. Tests for 4 important chemistries in seconds - Cyanuric Acid, Total Dissolved Solids, High Range Hardness, and Low Range Hardness.
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