1 Scope
This specifies a method for determining the resistance of the color of textiles of all kinds and in all forms to immersion in water.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this part of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB 250-1995 Gray scale for assessing change in color (idt ISO 105-A02: 1993)
GB 251-1995 Gray scale for assessing staining (idt ISO 105-A03: 1993)
GB/T 6151-1997 Textiles-Tests for color fastness-General principle of testing (eqv ISO 105-A01: 1994)
GB 7564~7568-87 Textiles-Tests for color fastness-Specification for standard adjacent fabric: Wool (neq ISO 105-F: 1985)
GB 11404-89 Textiles-Tests for color fastness-Specification for standard adjacent fabric: Multifibre (neq ISO 105-F10: 1989)
3 Principle
A specimen of the textile in contact with one or two specified adjacent fabrics is immersed in water, drained and placed between two plates under a specified pressure in a test device. The specimen and the adjacent fabric(s) are dried. The change in color of the specimen and the staining of the adjacent fabric(s) are assessed by comparison with the grey scales.
4 Apparatus and reagent
4.1 Test device, consisting of a frame of stainless steel into which a weight-piece of mass approximately 5 kg and base of 60 mm × 115 mm is closely fitted, so that a pressure of 12.5 kPa can be applied on test specimens measuring 40 mm × 100 mm placed between glass or acrylic-resin plates measuring approximately 60 mm × 115 mm × 1.5 mm that, if the weight-piece is removed during the test, the pressure of 12.5 kPa remains unchanged. If the dimensions of the composite specimen differ from the size of 40 mm × 100 mm, the weight-piece used shall be such that a pressure of 12.5 kPa is applied to the specimen.
Note 1 Other device may be used provided that equivalent results are obtained.
