This International Standard specifies a test method for vitreous and porcelain enamelled articles using high voltage.This high voltage test is used to detect defects in enamel coatings that extend down to the metal base, and to locate weak spots in enamel coatings.This test method applies to voltages not less than 2 kV and a coating thickness not less than 660 μm. This title may contain less than 24 pages of technical content.