... pH: 3.0min, Water Insolubles, 0.15%max Grain size: 15mm max Packing: PP/PE 50kg/bag 4--Ironless aluminium sulphate Specification: Al2O3 ... , 16%min, Fe: 0.005%max, pH: 3.0min, Water Insolubles: 0.15%max, As: 0.0005%max, Pb: 0 ... 3.0min, Water Insolubles: 0.15%max Size: Below 10mesh-100mesh min; Packing: 25kg/bag PP/PE 4)Packing:Packing 50kg/25kg/plastic ...