The document specifies a method of revealing discontinuities and porosity in metallic coatings, where they penetrate the coating layer or layers down to a silver, copper or copper-alloy substrate.
DIN EN ISO 12687:1998 history
1998DIN EN ISO 12687:1998-09 Metallic coatings - Porosity tests - Humid sulfur (flowers of sulfur) test (ISO 12687:1996); German version EN ISO 12687:1998
1998DIN EN ISO 12687:1998 Metallic coatings - Porosity tests - Humid sulfur (flowers of sulfur) test (ISO 12687:1996); German version EN ISO 12687:1998