If the free chlorine level is improper with respect to pH, water will have an unpleasant taste and odor and the disinfecting potential of the chlorine will be diminished. Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine.
Chlorine compounds together with chloramines form combined chlorine.
Combined chlorine and free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a higher stabilty and has a lesser volatility. Chemical Method DPD Order Cat. Inc. All Rights Reserved.