... adjust plating bath, add calculated brightener, then begin production.rest for 12min., finally filter.Add 1~2g/L WT purifier into ... bath which need treatment, stir it for 20min., rest for 30 min., then stir it for 20min.,TREATING METHOD:zinc plating bath, the ... organic decomposition products in non-cyanide and cyanidePROPERTIES: WT Purifier for Alkaline Zinc Plating