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.
Текущий статус : WithdrawnДата публикации : 1989-12
Версия : 3
Технический комитет:Tests for coloured textiles and colorants