385 Passivation is a trivalent chromium blue passivator. It is suitable for cyanide zinc plating, alkaline zinc plating, and acid zinc plating, and can produce a bright, blue passivation film. This product has excellent white rust resistance, and the neutral salt spray test can last more than 48 hours without white rust. When used in combination with a sealer, it can greatly extend the time before white rust appears in salt spray tests.
