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53 view(s) What's the difference between free and total chlorine?
Most methods of measuring chlorine in water refer to free and total chlorine, but what exactly do these mean and what is the difference? Measuring Chlorine with a Pocket Colorimeter The element Chlorine exists as a gas Cl2, when this is mixed with water it forms hypochlorous acid (HOCl) which is the disinfecting agen...
