1.Water Treatment Aluminium Sulphate 2.Ferric and non-ferric 15.8% ; 16%; 17% 3.ISO Certificated 4.HS ... , %≤0.0020.002Water Insolubles, %≤0.150.15Grain size,≤15mm2---5mm Non-ferric LevelITEMSTANDARDAl2O3,%≥16Fe, %≤0.005Ph value,≥3.0As, %≤0.0005Pb ... .5Ph value,≥3.0Water Insolubles, %≤0.15Grain size,≥10mesh -100mesh Non ferric aluminium sulphate 17.0%