Designed for processing metal surfaces to remove corrosion or rust. Protects the treated surface from subsequent atmospheric and climatic influences. Passivates the metal surface, converting corrosion products into a solid coating that can serve as a base for painting. Method of application: Shake well before use. Clean the metal surface from loose rust. Apply the product to the surface with a brush, roller, or spray method at a temperature not lower than +10°C on a dry degreased surface in two layers with intermediate drying for about 30 minutes. The surface can be painted after the complete drying of the surface (no less than 30 minutes at a temperature of +20°C). Temperature range of application: from +10°C to +30°C. Volume: 1 liter. Composition: Deionized water ≥30%, inorganic acid 15-30%, functional additives ≤5%.