Sika® FerroGard®-903+ is a surface applied mixed corrosion inhibitor, designed foruse as an impregnation of steel reinforced concrete and is an improved formulationof the original Sika® FerroGard®-903.Sika® FerroGard®-903+ is based on organic compounds. Sika® FerroGard®-903+penetrates the concrete and forms a protective monomolecular layer on the surfaceof the reinforcing steel.