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OWAPHOS is a rust remover and passivater for ferrous and non-ferrous metals as well as galvanised and zinc coated surfaces. Negating the need for sanding, OWAPHOS quickly and effectively, chemically prepares new metal surfaces for painting by creating a fine coat of oxide on the surface that coatings can firmly adhere to. Used diluted OWAPHOS removes rust from ferrous metals and the oxidation from non-ferrous metals e.g. Aluminium, Galvanised and Zinc surfaces.