2016DIN EN ISO 14647:2016-11 Metallic coatings - Determination of porosity in gold coatings on metal substrates - Nitric acid vapour test (ISO 14647:2000); German version EN ISO 14647:2016
2016DIN EN ISO 14647:2016 Metallic coatings - Determination of porosity in gold coatings on metal substrates - Nitric acid vapour test (ISO 14647:2000); German version EN ISO 14647:2016
1970DIN EN ISO 14647 E:2015-11 Determination of porosity of gold coatings on metal substrates with metal coatings Nitric acid vapor method (draft)