2011NF A92-200-3:2011 Vitreous and porcelain enamels - Determination of resistance to chemical corrosion - Part 3 : determination of resistance to chemical corrosion by alkaline liquids using a hexagonal vessel.
1999NF A92-114:1999 Vitreous and porcelain enamels. Apparatus for determination of resistance to hot detergent solutions used for washing textiles.