CHEMTECH 5 LITRE CBZ ALUMINIUM CLEANER Chemtech CBZ is safer to use than products containing hydrofluoric acid. Chemtech Blitz may be used neat or diluted with water to required strength. Brush or spray on the surface to be treated until completely covered. NOTE: keep product evenly distributed using a brush. DO NOT allow product to run (or dry out) as this may cause unnecessary streaking. Allow 5-10 minutes for surface reaction to take place then rinse thoroughly with clean water. The treated surface will result in a clean matt finish. This may be polished to a high gloss finish with Chemtech Alushine. Chemtech Blitz will dull polished aluminium. See back label for dilution instructions. CLEANS STAINS & OXIDATION FROM ALUMINIUM & STAINLESS STEEL.