... and purifying minerals,such as lubricating oil,diesel oil,paraffin wax,gasoline,grease,kerosene,white oil,vaseline,etc.♦Used for ... oil & asphalt approach),%≥95Activity(NaAc approach)≥200Free acid (H2SO4),%≤0.20Water content before leaving factory,%≤10.0Granularity(over 200 mesh ... 90Filtration rate, ml/min≥10.0NoteBulk density(g/ml):0.7~1.1; heavy metal(measured in Pb), %:<0.005,arsenic(As),%:<0.0005