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What is bright dip?

Bright dipping is a process for increasing the specularity or brightness of aluminum by leveling the microscopic roughness or “peaks and valleys” on the surface of the aluminum.

The process cannot do macropolishing or smoothing of scratches or pits. This limitation underscores the need for careful handling prior to bright dipping.

Most commercially available bright dip baths consist mainly of phosphoric and nitric acid. Additives are introduced to reduce nitrogen oxide fumes and to enhance the brightening ability of the bath.

SAF does not offer bright dipping. To find a supplier, visit