1.Water Treatment Aluminium Sulphate 2.Ferric and non-ferric 15.8% ; 16%; 17% 3.ISO ... ,≤15mm2---5mm Non-ferric LevelITEMSTANDARDAl2O3,%≥16Fe, %≤0.005Ph value,≥3.0As, %≤0.0005Pb, %≤0.002Water Insolubles, %≤0.15Grain size,≤15mmAluminium Sulphate PowderItemStandardAl2O3,%≥15.8Fe ...