I-Fin AL Chemical Bright 48 Description Application: A unique nitrate-free chemical brightening additive to impart a brighter finish during pre-treatment of Al prior to Anodizing. Growel Advantage: Brightens the aluminum & aluminum alloys prior to anodizing & another related process – Allows, the user to meet the need for decorative appeal. Eliminates the need of using nitrate-based processes. No corrosive fumes. Better work atmosphere. get a quote