... .35-1.4 2.Size:3,6,10,13,19,25,38,50mm 3.ISO 9001:2008 4.Acid resisitance(%):>99 ... alumina ball as catalyst support media Al2O3:17%-99.5%Size: 3,6,9,13,19,25,38,50MMVODA Inert Ceramic Ball for ... >99Al2O3 (%)17-2323-3047-5690-9399Fe2O3 (%)<1<1<1<1<1CaO (%)<0.5<1.5<2<40.2MgO (%)<0.5<2.5<0.5<0.50 ... .1K2O + Na2O (%)<4<4<3.5<4>0.5TiO2 ...