Transcription of PPM or ORP: Which Should Be Used?
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PPM or ORP: Which Should Be Used?
Swimming Pool Age & Spa Merchandiser, November 1985 ppm or orp : Which Should Be Used? Water treatment experts arebecoming increasingly aware thatwater disinfection is dependent upon ORPand not the free residual chlorine JACQUES M. STEININGEROver the past few years, therehas been an increasing recognition amongwater treatment specialists and healthofficials that the oxidation-reductionpotential (ORP or Redox) can provide aneffective measure of sanitizer activity inpool or spa technology has beenrecognized and incorporated into Europeanand world water standards for several 1972, the World Health Organizationrecognized in its Standards for DrinkingWater (WHO 1972) that at an ORP levelof 650 millivolts (mV), water isdisinfected and viral inactivation is 1968, a laboratory study byCarlson, Hasselbarth and Mecke ofthe Water Hygiene Institute of theGerman Federal Health Officeshowed that the rate of killing of organisms in swimming pool water isdependent on ORP and not on the freeresidual chlorine level.
Swimming Pool Age & Spa Merchandiser, November 1985 PPM or ORP: Which Should Be Used? Water treatment experts are becoming increasingly aware that
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