Historical
BS EN ISO 2085:2010
Anodizing of aluminium and its alloys. Check for continuity of thin anodic oxidation coatings. Copper sulfate test (British Standard)
ISO 2085:2010 specifies a method for checking the continuity of thin anodic oxidation coatings on aluminium and its alloys by a copper sulfate contact test.
The use of this method is limited to anodic oxidation coatings of thickness less than 5 μm, or coatings that have been deformed.
British Standards Institution [bsi]