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5 Cards in this Set
- Front
- Back
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Sodium hypochlorite (NaOCl) solution is available with _______available chlorine. |
5 to 20% |
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According to the a AWWA standard C651, disinfection of water mains requires 24 hour exposure to which minimum free chlorine residual? |
25 mg/L |
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Booster chlorination is chlorine added |
Somewhere in the distribution system |
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Which must be measured at least the same time and at the same sample points in the distribution system at total coliform’s are sampled for a water system that only uses surface water? |
Residual disinfectant concentration |
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Hypochlorous acid is: |
A weak acid |
