OS-304 Acid Cleaner
OS-304 Acid Cleaner is an extremely free rinsing cleaner for removal of chromates, fingerprints, shop soils, and oxides from copper and copper alloys. OS-304 is non etching, removing oxides with little or no attack on basis metal. It contains no chelating agents or other ingredients that complicate waste treatment. Dry films and primary image screening resists are not attacked by OS-304 solutions.