... maxph value3.0min3.0minWater Insolubles0.15%max0.15%maxGrain size:15mmmax2---5mmWater treatment LevelITEMSTANDARDAl2O3,%≥1617Fe, %≤0.70.7Ph ... .0005Pb, %≤0.0020.002Water Insolubles, %≤0.150.15Grain size,≤15mm2---5mm Non-ferric LevelITEMSTANDARDAl2O3,%≥16Fe, %≤0.005Ph value ... , %≤0.0005Pb, %≤0.002Water Insolubles, %≤0.15Grain size,≤15mmAluminium Sulphate PowderItemStandardAl2O3,%≥15.8Fe, %≤0.005 /0.5Ph ...