This code sets out a recommended practice applying to the formation of iridescent chromate passivation films on zinc for the purposes of increasing corrosion resistance, reducing attack by certain vapours from organic substances and, in the case of zinc-coated articles, increasing the protective value of the zinc coating.
Technical Report No. 13-2 Fundamentals of an Environmental Monitoring Program Annex 1: Environmental Monitoring of Facilities Manufacturing Low Bioburden Products