... water for precision manufacture,it has a very wide range of applications especially in paper size,drilling exploration,drugs,sugar ... 000001Cr6+ %≤0.00005Note:The As,Pb,Cd,Hg, Cr6+ insoluble index of the liquid products listed in the table are calculated according ... to 10% of Al2O3 ≥10%,the impurities index is calculated according to Al2O3 10% product proportion ...