Glass polishing powders based on cerium oxide have long been established as the best polishing agents for all types of glass polishing applications.

Cerium oxide is unique in its polishing action because the cerium, while removing glass by abrasive action, reacts chemically with the glass surface to produce a brittle surface layer which is more readily removed than the glass itself. This results in rapid removal of the glass as well as producing a surface finish of outstanding quality.

For the most demanding applications, e. g. for the production of high quality optical components, a high cerium content and small particle size is required. For less demanding applications, e. g. for the edge polishing of flat glass, a higher particle size can be tolerated and consequently, lower cerium oxide content is acceptable.

Powders for the less demanding applications have a lower cerium content resulting in a lower price, but because the cerium is of a very high quality and the additives carefully selected to maintain high performance there is no loss of polishing performance when the powder is compared with powders which are more highly priced.

Weldon Chemicals Ltd produces a range of powders suitable for each different application in the glass polishing industry. We produce three products which are available from stock and can also produce powders to meet customers’ specifications. All our powders are based on chemically precipitated cerium with a very high purity.

This is very important to ensure the highest polishing performance. Many powders on the market are based on low grade cerium products and are therefore unable to give optimum performance expressed in terms of the cerium content.