what are the chlorine limits for drinking water
Theconcentrations of hypochlorous acid and the hypochlorite ion are approximately equal at pH7.5 and 25 Â°C. Chlorine can react with ammonia or amines in water to form chloramines(4,5). ANALYTICAL METHODS A colorimetric method can be used to determine free chlorine in water at concentrations of0.1â10 mg/litre. Other methods allow for the determination of free chlorine, chloramines,other chlorine species, and total available chlorine, and are suitable for total chlorineconcentrations up to 5 mg/litre.