6. If the pool water temperature exceeds 35 °C, the standards in section 5 apply, except the standards for chlorine, bromine and ORP which are the following:
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Parameter Standard
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Residual disinfectant
Free chlorine 2.0 to 3.0 mg/l
Total bromine 3.0 to 5.0 mg/l
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If equipment for measuring oxidation-reduction potential (ORP) is used, the value measured must be greater than 750 mV.