... Al2O3:15.8%,16%,17% 2.Fe2O3: 0.47% 3.PH Value:3.1 4.Insoluble:0.1% 5.Aluminum Suphfate MOQ: ... : Al2O3, 15.9%min, Fe: 0.007%max, pH: 3.0min, Water Insolubles, 0.15%max Grain size: 15mm ... sulphate Specification: Al2O3, 16%min, Fe: 0.005%max, pH: 3.0min, Water Insolubles: 0.15%max, As: 0.0005% ... Specification: Al2O3: 15.7%min, Fe: 0.5%max, pH: 3.0min, Water Insolubles: 0.15%max Size: Below 10mesh- ...