To ensure that pool water is safe for bathers to swim in and to allow the creation of the best environment to protect plant and equipment several tests need to be carried out and the results scrutinised. The tests normally required are: 1. Free chlorine 2. Total chlorine 3. pH 4. Total alkalinity 5. Calcium hardness 6. Total dissolved solids 7. Langelier water balance 8. Cyanuric acid (if applicable) NOTE: In the UK and Ireland, Arch Water Products offer comprehensive hth service to public pool operators...
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