Al2O3: 17% min; Fe: 0.005% max; PH: 3.0min Water Insolubles: 0.15% max. As: 0.0005% max; Pb: 0.002% max. Grain size: 15mm max( Flakys) Price: 150USD/ MT FOB qingdao Package: PP/ PE 50KG/ BAG, 25KG/ BAG, 25MT/ 20GP Use : used in treatment waste water, oilfield water, drinking water. Contact: sufieer at sanfengchem dot com