BS EN ISO 8289-1:2020 pdf free.Vitreous and porcelain enamels - Low-voltage test for detecting and locating defects. The test electrode for method A consists of a sponge made of plastic, cellulose or similar material. For rough scanning of large enamelled surfaces, test electrodes with an area of not greater than 100 cm2 shall be used. Any defects that are detected...