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Metallic coatings — Porosity tests — Porosity in gold or palladium coatings by sulfurous acid/sulfur dioxide…

Overview ISO 15721:2001 specifies a laboratory porosity test for gold and palladium metallic coatings using sulfurous acid / sulfur dioxide (SO2) vapour. The method is intended to reveal pores, disco…

Metallic coatings. Porosity tests. Porosity in gold or palladium coatings by sulfurous acid/sulfur dioxide va…

Tea — Preparation of ground sample of known dry matter content

Overview ISO 1572:1980 specifies a standardized laboratory method for preparing a ground sample of tea and determining its dry matter content. The procedure ensures analytical results can be reported…