To avoid corrosion, mix solution in a plastic pail or other suitable container.  Dilute concentrate with 50 - 100 parts of water to one part ALUMINUM CLEANER concentrate. For non-polished areas to be cleaned with Aluminum Cleaner Concentrate dilute concentrate with 5-50 parts water for heavy duty cleaning.  Apply solution to surface to be cleaned with brush or sprayer, working in small sections from the bottom upward to avoid streaking.  Allow solution to remain on surface for 3 to 5 minutes.  Do not allow surface to dry out during application.  Agitate surface with a long handle brush to remove heavy soils, rinse with clear water.  Avoid contact with glass or porcelain surfaces as product will etch.  If contact should occur, rinse immediately with water.