ISO 4524-3:1985

Metallic coatings — Test methods for electrodeposited gold and gold alloy coatings — Part 3: Electrographic tests for porosity

Specifies five electrographic tests for assessing the porosity of these gold and gold alloy coatings for engineering, and decorative and protective purposes. The methods are: cadmium sulfide paper test, nioxime paper test, dye-transfer paper test 1 and 2, and electrographic gelatine film test.