This standard specifies the test method for the determination of the color fastness to washing of textiles. This standard is applicable to the determination of the scrubbing resistance of various textiles, especially products dyed or printed with pigments. This standard does not apply to loose fibers.
GB/T 420-1990 history
2009GB/T 420-2009 Textiles.Tests for colour fastness.Colour fastness to wet scrubbing of pigment printed textiles
1990GB/T 420-1990 Textiles--Testing method for colour fastness to wet scrubbing