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.