... MOQ:1MT Aluminium Sulphate Water Treatment Al2 (SO4)3 15.8%,16%,17% 1) Technical Index Aluminium Sulphate ... 3)Category: 1---Industrial aluminium sulphate (1) Specification: Al2O3; 15.8%min; Fe: 0.5%max; pH: 3.0min ... 50kg/bag 2---Water-treatment aluminium sulphate Specification: Al2O3, 15.80%min; Fe: 0.50%max; pH: 3. ... Al2O3, 16%min, Fe: 0.005%max, pH: 3.0min, Water Insolubles: 0.15%max, As: 0.0005%max, ...