What should the color of the reagents for the CL17 chlorine analyser be?
CL17 reagent color information
The buffer solution should be clear and colorless. The indicator solution, after the DPD powder is added, can vary in color from clear to a light pink. The color will vary from lot to lot, but this does not indicate a quality problem, and it will not affect your chlorine results. If the indicator solution turns a dark purple then the indicator solution has been contaminated and should be replaced with a fresh bottle.