... GB/T6166-1985ISO 9001:2008 High density,mechanical strength Activated Alumina Ball Filter Media Properties: milky white spheres, non-toxic, ... Weight0.75 G/Cm3Wear Rate%≤0.6 %Advantages of Activated Alumina Ball Filter Media: 1. High Strength, non-toxic, odorless, ... Packing 25kg into polywoven bag, PE lined. 50kg into poly woven bag, PE lined. 500kg or 1000kg into jumbo bag. Alumina grinding Ball ...