A specimen of the textile to be tested, with the adjacent fabric attached is subjected to washing under specified conditions. Te extent of any change in color and that of the staining of the adjacent fabric are assessed and the rating is expressed in fastness numbers. There are two types of adjacent fabrics; single fiber fabric and multiple fiber fabric. In the case of multi fiber fabric only one specimen is required and in the of single fiber fabric two adjacent fabric are required. A sample of textile in the form of fabric is in contact with a piece of specified adjacent fabrics in mechanically agitated in a soap or soap-soda solution, rinsed and dried. The change in colour of the specimen and the staining of the adjacent fabrics are assessed with a gray scales. Sampling: The sample should be a representative sample or one agreed to between the buyer and the seller. Apparatus: Launder-Ometer Washing Fastness Tester ; Water bath containing ...