Free chlorine definition

Free chlorine means the concentration of hypochlorous acid and hypochlorite ion in the swimming pool water as measured with a DPD (diethyl-p-phenylene diamine) test kit or as measured by another method approved by the department.
Free chlorine means the residual chlorine existing in water as the sum of hypochlorous acid and hypochlorite ion.
Free chlorine means that portion of the total chlorine remaining in chlorinated water that is not combined with ammonia, nitrogen compounds, or other compounds and will react chemically with undesirable or pathogenic organisms.

Examples of Free chlorine in a sentence

  • Free chlorine residual shall be measured in the storage tanks and at the point where treated water enters the distribution system using a colorimeter or spectrophotometer.

  • Elevated metals (Aluminium, Iron) The Walli 1x E.coli detection (March 2015) Free chlorine exceedance (5.94) on 28/11/2017.

  • Free chlorine residual within the distribution system shall be measured with a colorimeter or spectrophotometer.

  • Free chlorine was measured using a portable Hach® chlorine test kit (Hach, Loveland, CO) and reported as mg/L.


More Definitions of Free chlorine

Free chlorine means the portion of total chlorine that is not combined chlorine and
Free chlorine means the concentration of hypochlorous acid and hypochlorite ion in the swim- ming pool water.
Free chlorine means the amount of chlorine available as dissolved gas, hypochlorous acid, or hypochlorite ion that is not combined with an amine or other organic compound;
Free chlorine means the concentration of hypochlorous acid and hypochlorite ion in the swimming pool water.
Free chlorine. (FAC) means the portion of the total available chlorine present in the as HOCl or hypochlorite ion (OCl- ). Free chlorine residual shall be maintained for adequate disinfection.
Free chlorine or “Free Available Chlorine” means the portion of the total available chlorine that is not combined chlorine or cyanurate-bound chlorine and is primarily present as hypochlorous acid and hypochlorite. For purposes of this document, free chlorine is the portion of total chorine that reacts with the DPD chlorine test.
Free chlorine means the portion of total chlorine that is not combined chlorine and that is available as HOCl and OCl-. This is the portion of total chlorine that reacts with DPD chlorine test.