... 9.5 Grinding Ceramic Ball, Inert White Alumina BallsProfessional manufacturer & exporter of high alumina ball as catalyst support media Al2O3: ... 17%-99.5%Size: 3,6,9,13,19,25,38,50MMVODA Inert Ceramic ... for support of all types of catalyst.Chemical composition & Physical properties SpecificationCommon Ceramic BallInert Ceramic BallMedium Alumina BallHigh Alumina Ball99% ...