Free Chlorine

Free Chlorine is a crucial parameter in water quality management, referring to the residual chlorine available in the form of hypochlorous acid (HOCl) and hypochlorite ions (OCl⁻) after the disinfection process. The availability of Free Chlorine ensures continuous disinfection effectiveness and prevents the growth of pathogenic microorganisms. To accurately monitor this concentration, electrochemical (amperometric) methods are commonly employed. Measuring Free Chlorine is vital in applications such as drinking water treatment, cooling towers, and swimming pools, often requiring temperature and pH compensation to ensure stable and precise results.