Field of application The chemical resistance allows the use in aggressive and corrosive media. Valve ball – Closure beads The glass beads are used as valve beads for ink cartridges and dispensers in the food and cosmetics industry. Metering pumps and ball check valves are often equipped with this kind of glass beads. Ball Bearings Glass beads are used in ball bearings where corrosion resistance and chemical resistance play a role. Mixing Beads The pharmaceutical industry is a large field of application for mixing beads. For example, insulin carpules contain a borosilicate glass ball, which mixes the contents by shaking to achieve an even mixture of insulin.