The invention relates to a
reagent kit for detecting
residual chlorine in water, which comprises a free-
chlorine detecting
reagent kit and a total-
chlorine detecting
reagent kit, wherein the reagent kit is prepared by mixing
solid buffer, color-developing agent and
masking agent in proportion; the free-
chlorine detecting reagent kit is prepared by mixing the
solid buffer, free-chlorine color-developing agent and
masking agent in weight ratio of 16:1:1; and the total-chlorine detecting reagent kit is prepared by mixing the
solid buffer, total-chlorine color-developing agent and
masking agent in weight ratio of 16:19:1. The reagent kit provided by the invention is conveniently, quickly and accurately used. By the invention, the inconvenience and difficulties in the application of the original liquid reagent can be overcome and the quality guarantee period of the detecting reagent can be prolonged, and the reagent kit fully meets the requirement of
residual chlorine detection in chlorination disinfection commonly used in various industries. Besides, the proportion of buffer is large in the reagent kit and the buffer can be used for buffering the pH values of various types of
surface water and underground water, as well as industrial
sewage and sanitary
sewage, therefore the pH value of a detected
water sample is not necessary to adjust when the reagent kit is used in the detection. The reagent kit is more convenient to use and has high popularization value and use value.