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Paint and Coatings Industry Standards
ISO 4524-3:1985 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.
