Crazing Resistance of Ceramic Tiles - Test Method - BS EN ISO 10545-11:1996
Ceramic tiles. Determination of crazing resistance for glazed tiles.
This test method is for the determination of the resistance to the formation of crazes by subjecting whole tiles to steam at high pressure in an autoclave, then examination of the tiles for crazes after applying a stain to the glazed surface.
Crazes show as fine hairline cracks, limited to the glaze surface.