... 2.ISO9001:2008 3.Size:3,6,10,13,19,25,38,50mm Inert Ceramic Ball of Size 3 ... ,6,10,13,19,25,38,50mm XINGFENG Catalyst bed support media 17% ... . Chemical composition Al2O3+SiO2Al2O3Fe2O3MgOK2O+Na2O +CaOOther> 93%17-19%<1%<0.5%<4%<1%Leach able Fe2O3 is less ... composition ItemValueWater absorption (%)<0.5Bulk density (g/cm3)1.35-1.4Specific gravity (g/cm3) 2.3-2.4 Free volume ...