Transcription of ORP CONTROL IN POOLS AND SPAS
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ORP CONTROL IN POOLS AND SPAS
COPYRIGHT SBCS 1998 ORP CONTROL IN POOLS AND SPASBy J. Steininger D. Barbara CONTROL SystemsPrinciple of OperationORP (Oxidation-Reduction Potential) CONTROL ofsanitizers in POOLS and spas has been used all overthe world with great success for over 30 understanding of ORP technology is based onnumerous studies by scientists and health authoritiesin the and other countries. It has been confirmedin the field by thousands of pool and spa operatorswho use ORP controllers every day to monitor theactivity of chlorine, bromine or standards have been recognized by the WorldHealth Organization (WHO), by the Center forDisease CONTROL (CDC) in Atlanta, Georgia, by stateand local health departments and by the NationalSpa and Pool Association (NSPI) in Washington,DC. ORP CONTROL is required by code in several statesand more states (such as California and Florida) areplanning to add it to their new and PPM Test KitsPool and spa operators must realize that test kit measurements differ fundamentally from ORP readings.
Page 3 Using ORP control The recommended ORP level for pools and spas is between 650 and 750 mV. It can be even higher in very clean water. The absolute minimum of 650 mV applies to both chlorine and
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