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Paint and Coatings Industry Standards
ISO 4521:2008 ISO 4521:2008 Metallic coatings -- Test methods for electrodeposited silver and silver alloy coatings -- Part 3: Determination of the presence of residual salts
Specifies a method of boiling specimens in water having a known electrical conductivity. Any increase of the conductivity indicates residual salt or other conducting impurities.
