... Al2O3; 17%min, Fe: 0.5%max, pH: 3.0min Water Insolubles: 0.15%max Grain size: 2---5mm Use: Used ... , 15.9%min, Fe: 0.007%max, pH: 3.0min, Water Insolubles, 0.15%max Grain size: 15mm max Packing: ... Specification: Al2O3, 16%min, Fe: 0.005%max, pH: 3.0min, Water Insolubles: 0.15%max, As: 0.0005%max, Pb: ... : 15.7%min, Fe: 0.5%max, pH: 3.0min, Water Insolubles: 0.15%max Size: Below 10mesh-100mesh min; Packing ...