Passivating composition CRS-Pass-C2 is a dry concentrate intended for use as an aqueous solution for rainbow passivation of electrolytically galvanized products. Composition "SVK-Pass" is used as an aqueous solution for passivation, conversion of rust, oxidation of parts of ferrous and non ferrous metals to improve their corrosion resistance and preservation of a decorative appearance during the operation. The main consumers of this products are metalworking, machine building and instrument making companies.