The Role of Chlorine Colorimeters in Disinfection
Colorimetry is a way to measure the concentration of substances that absorbs light. In a colorimetric test, a reagent is added to a water sample. If the analyte that a user is trying to detect, like chlorine, is present in that water sample, a color change will occur. A colorimeter is an instrument used to measure the intensity of that color change and correlates that change to a useful unit of measure for the user– such as mg/l chlorine.