2011NF A92-200-2:2011 Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 2 : determination of resistance to chemical corrosion by boiling acids, boiling neutral liquids and/or their vapours.
1989NF A92-106:1989 Vitreous and porcelain enamels. Determination of resistance to boiling citric acid.