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  • Prepackaged collections of devices, instruments, and supplies used to measure chlorine levels in water. Chlorine test kits typically use a color change method, such as color discs or drop titration, to determine the concentration of free, total, and/or combined chlorine in a water sample. The kits usually include items such as a colorimetric reagent (e.g., DPD, sodium thiosulfate, orthotolidine), test tubes, visual standard for color comparison, and flasks. Chlorine test kits may also be specific to low or high range of chlorine levels.
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