... : Al2O3, 15.80%min; Fe: 0.50%max; pH: 3.0min; Water Insolubles: 0.15%maxAs ... : 0.0005%max; Pb: 0.002%max Use: Treatment for the drinking water ... .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: 0.002%max Grain size: 15mm max ...