DYNAPREP AS No.2 is a proprietary, nitric acid-free desmutter for aluminum and its alloys. It is ideal for removing smuts and oxides that form in alkaline etching solutions and the resulting aluminium surface is highly active for subsequent processing. DYNAPREP AS No.2 is a powdered product that is used with water and sulphuric acid to make a safe, highly stable solution for stripping zincate from aluminum. DYNAPREP AS No.2 can also be used to make a non-chelated, mild etch solution for copper. When used as recommended, this mixture will provide a clean, uniformly micro-etched copper surface that will readily accept electrolytic or electroless copper or nickel in printed circuit board or commercial applications.
