Color fastness to washing is the common quality parameter, which is considered very important from the point of view of consumers. This test determines the loss & change of colour in the washing process by a consumer and the possible staining of other garments or lighter portion that may be washed with it. The color fastness testing to washing First, the purpose and principle: 1, this test method is applicable to the detection of conventional home or commercial washing process for home textiles washable color fastness 2, this test method for washing color fastness test for does not reflect the conventional commercial washing process added by the utility of brighteners. 3, a single wash test (STest) results with a home or commercial wash effect. Second, the preparation before the experiment: Cut the sample size of 40mm100mm and multi-fiber cloth, and along the sample and a short edge of the multi-fiber cloth and the multi-fiber cloth face to face sewing toge...