New Standard from Last Update.

1. SCOPE

1.1 This standard (Part 8) covers a method of test for determining the stain and chemical resistance of the proper surface of all glazed ceramic tiles.

1.2 The method is applicable to all glazed ceramic tiles, except that the pencil test for chemical resistance is only applied to glazes from which pencil marks can be removed by means of a wet cloth.

1.3 Where the pencil test is not applicable, the chemical resistance of glazes shall be classified by the change in appearance resulting from chemical action.

1.4 The stain test is not applicable to tiles described as part glazed.