... COA,SGS,MSDS,COA. Hot selling Hydrated Lime/slack lime for Hair Removing Spray Synonyms: calcium hydroxide, slaked lime, lime ... 1). Mainly adjust acid waste water PH value, widely used for electroplate, Chemical industry, circuit board, pickling, printing & dyeing and ... into suspension & turbid liquid until the PH value come to target valueDry dosing: add it directly to the reaction pool, control ...