Drops of a solution of acid are placed on the specimen, the surface of which is rubbed gently with a glass rod to ensure penetration. The changes in colour of the textile, while it is still wet and after drying, are assessed with the grey scale. Three tests differing in severity are provided.
Status : WithdrawnPublication date : 1989-12
Edition : 3Number of pages : 2
Technical Committee:Tests for coloured textiles and colorants