Taylor DPD Powder Reagent, .25 lb | R-0870-J

Taylor FAS-DPD Powder Reagent - 1/4 LB Taylor formulates its reagents to remain effective for at least one year, with only very few exceptions (molybdenum indicator in liquid form is one; after four months old it should be tested against a standard periodically). As a general precaution, replace all reagents more than one year old, or at the beginning of a new testing season. Features and Benefits When added to water, will turn sample to pink if free chlorine is present Taylor R-0870-J