Alumina balls are composed of more than 99% sintered alumina with very low impurity levels. They are essentially inert in most chemical environments. The low silica content makes them perfect for high temperature applications where silica leaching must be minimal, such as in reformers for synthesis gas production. Synthesis gas is a mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide. Low level of impurities makes alumina spheres ideal for supporting adsorbents such as ethylene and propylene. The ultra low porosity, very high density and outstanding thermal shock resistance of alumina spheres make them ideal for regenerative burner and filtering media for the metals industry.