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ISO 4524-4:1985 Metallic coatings - Test methods for electrodeposited gold and gold alloy coatings - Part 4 : Determination of gold content
standard by International Organization for Standardization, 04/01/1985
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Applies to coatings for engineering, and decorative and protective purposes. Specifies general, removal of gold coating from basis metal and undercoats, fire assay, spectrophotometric and atomic absorption spectrometric methods and test report.