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Sika FerroGard 903+ is a surface applied mixed corrosion inhibitor, designed for use as an impregnation of steel reinforced concrete. Sika FerroGard -903 is based on organic and inorganic compounds. Sika FerroGard -903+ penetrates the concrete and forms a protective monomolecular layer on the surface of the reinforcing steel. Protection with Sika FerroGard -903 both delays the start of corrosion and reduces the corrosion rate. Corrosion protection with Sika FerroGard-903 increases the service and maintenance life cycles by up to 15 years when used as part of a complete Sika Concrete Repair and Protection System.