Potassium Alum,Aluminium potassium sulfate,Potash alum Aluminium potassium sulfate:99.5%min Iron:0.05%max Water:1.0%max Heavy metal(As Pb):0.002%max Water-insoluble substance:0.2%max The product quality conforms to the national GB1895-2004 standard In the field of light and Chemical Industries: Purification of water, paper making and glue spreading, painting, printing and dyeing, color lake and pigment, medicine producing,varinish and leather producing, fiber board processing fixation and membrane solidified for film, and applied in rubber, metallurgical and colored glass etc. industries. In the field of food stuff industry:Fermentation of foodstuff, vermicelli or noodles processing, salted aquatic, foodstuff antisepsis and additives etc. In the field of Agricultural Applications: Seed sterilization and soak, to cure the sickness for drought animals, root solidation, germination, stem strengthen fruit plumpness and potash fertilizer spreading for some soil. Item unit Criteria Analysisresults conclusion Aluminiumpotassiumsulfate % 99.2min 99.5 Eligible Heavymetal(AsPb) % 0.002max 0.0017 Eligible As % 0.0002max 0.00011 Eligible Pb % 0.001max 0.0005 Eligible Water-insolublesubstance % 0.2max 0.15 Eligible F % 0.003max 0.0022 Eligible water % 1.0max 0.95 Eligible Stored in dry, cool airiness place, far away from heat, avoid insolation, sign with no moisture and no insolation. Can be produced on request of customers.