GB/T 3921-2008 PDF English
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GB/T 3921: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 3921-2008 | 70 | Add to Cart | Auto, 9 seconds. | Textiles -- Tests for colour fastness -- Colour fastness to washing with soap or soap and soda | Valid |
| GB/T 3921.1-1997 | 95 | Add to Cart | Auto, 9 seconds. | Textiles--Tests for colour fastness--Colour fastness to washing: Test 1 | Obsolete |
| GB/T 3921-1983 | RFQ | ASK | 3 days | Textiles--Testing method for colour fastness to washing | Obsolete |
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GB/T 3921-2008: Textiles -- Tests for colour fastness -- Colour fastness to washing with soap or soap and soda
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GB ICS 59.080.01 W 04 NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA Replacing GB/T 3921.1~3921.5-1997 Textiles - Tests for Colour Fastness - Colour Fastness to Washing with Soap or Soap and Soda (ISO 105-C10.2006, MOD) Issued on. April 29, 2008 Implemented on December 01, 2008 Jointly issued by. General Administration of Quality Supervision, Inspection and Quarantine (GAQSIQ); Standardization Administration (SAC) of the People's Republic of China.
Table of Contents
Forward... 3 1 Scope... 5 2 Normative References... 5 3 Principle... 6 4 Apparatus... 6 5 Reagents and Materials... 7 6 Test Specimen... 8 7 Operation Procedures... 9 8 Test Report... 10 Forward This Standard modifies and adopts ISO 105-C10.2006 "Textiles - Tests for Colour Fastness - Part C10.Colour Fastness to Washing with Soap or Soap and Soda". Compared with ISO 105-C10.2006, the main differences in this Standard are as follows. 1.The international standards specified in normative references are replaced by corresponding national standards; 2.The flax adjacent fabrics complying with GB/T 13765 are added in Table 1. 3.The rinsing method of composite-specimens after washing in 7.3 is improved. This Standard shall replace GB/T 3921.1-1997 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing. Test 1", GB/T 3921.2-1997 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing. Test 2", GB/T 3921.3-1997 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing. Test 3", GB/T 3921.4-1997 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing. Test 4" and GB/T 3921.5-1997 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing. Test 5". Compared with GB/T 3921.1~3921.5-1997, the main changes in this Standard are as follows. 1.Five parts of the original standards are integrated as one standard; 2.The professional standard of the instrumental assessment and international standard of acetate adjacent fabrics are added in normative references; 3.The recommendation on the mechanical stirring device and heating soap solution device is added; 4.The requirements of multi-fibre adjacent fabrics adopted for different test methods are added; 5.The selection method for the second piece of single-fibre adjacent fabrics tested at 60°C and 95°C is modified; 6.The rinsing method of composite specimens after washing is modified; 7.The optional assessment method for the change in colour of the specimen or the staining of adjacent fabric instrumentally is added. This Standard was proposed by China National Textile and Apparel Council. This Standard shall be under the jurisdiction of the Basic Standard Subcommittee of Technical Committee on Textiles of Standardization Administration of China (SAC/TC 209/SC 1). Chief Drafting Organizations of this Standard. Standardization Institute of Textile Industry, and Beijing Entry-Exit Inspection and Quarantine Bureau. Chief drafting staffs of this Standard. Si Ying, and Yu Feng. The historical editions replaced by this Standard are as follows. - GB 3921-1983, GB/T 3921.1-1997, GB/T 3921.2-1997, GB/T 3921.3-1997, GB/T 3921.4-1997, and GB/T 3921.5-1997. Textiles - Tests for Colour Fastness - Colour Fastness to Washing with Soap or Soap and Soda1 Scope
This Standard specifies methods for determining the colour fastness to washing of all kinds of textiles that are commonly used in households, It includes 5 type of tests on different washing procedures - from mild to severe procedure.2 Normative References
The following normative documents contain provision which, through reference in this text, constitute the provisions of this Standard. For dated reference, subsequent amendments (excluding amending error in the text) or revisions of these publications do not apply. However, all parties who enter into an agreement according to this Standard are encouraged to study whether the latest edition of the normative document is applicable.3 Principle
A specimen of the textile in contact with one or two specified adjacent fabrics is mechanically stirred under specified conditions of time and temperature in a soap, or soap and soda ash solution, then rinsed and dried.4 Apparatus
Other mechanical devices may be used for this test, provided that the results are identical with those obtained by the apparatus described in 4.1.Be aware of possible contamination (see the note in 7.2).5 Reagents and Materials
The first piece of adjacent fabrics shall be made of the same kind of the fibre as that of the textile to be tested. The second piece shall be made of the fibre as indicated in Table 1.6 Test Specimen
Yarn may be knitted into fabric and tested in this form. When yarns or loose fibres are to be tested, take the yarn or loose fibres of which the mass is approximately equal to one-half of the combined mass of the adjacent fabrics. Prepare the composite-specimen according to one of the following methods.7 Operation Procedures
For all tests, remove the composite-specimen at the end of the wash. Wash them twice in Grade 3 water (5.4) respectively. Then rinse them clean in running water.8 Test Report
Test report shall include the following information. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
