GB/T 8427-2008 English PDF (GBT8427-2008)

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GB/T 8427-2008: Textiles -- Tests for color fastness -- Color fastness to artificial light: Xenon arc fading lamp test
GB/T 8427-2008
GB
ICS 59.080.01
W 04
National Standard
of the People’s Republic of China
Supersedes GB/T 8427-1998
Textiles — Tests for color fastness — Color
fastness to artificial light.
Xenon arc fading lamp test
(ISO 105-B02.1994, MOD)
ISSUED ON. AUGUST 6, 2008
IMPLEMENTED ON. JUNE 1, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative reference ... 5 
3 Principle ... 6 
4 Standard materials and apparatus ... 6 
5 Specimens ... 10 
6 Exposure conditions ... 12 
7 Operation procedures ... 12 
8 Assessment of color fastness... 16 
9 Test report ... 17 
Annex A ... 19 
Annex B ... 22 
Annex C ... 24 
Annex D ... 27 
Annex D ... 29 
Foreword
This Standard revised and adopted ISO 105-B02. 1994, Corrigendum 1.1998, and
Corrigendum 2.2000 by using redrafting method. Compared with ISO 105-B02.1994,
the main changes in this Standard are as follows.
— CHANGE "... reach the temperature conditions specified in 4.2" in c) of
4.2.1.1.1 TO "... reach the temperature conditions specified in Chapter 6";
— CHANGE "a) and b) may occur in front of 7.2.2.3 or 7.2.2.4" in note 4 TO "b) and
c) may occur in front of 7.2.2.3 or 7.2.2.4".
— ADD the Annex B "the air cooling type xenon arc lamp equipment used to
determine the color fastness to light (flat plate type)". And the former annex
serial number was postponed.
This Standard replaces GB/T 8427-1998 "Textiles — Tests for color fastness — Color
fastness to artificial light. Xenon arc fading lamp test". Compared with GB/T
8427-1998, the main changes are as follows.
— CHANGE the "blue wool standard" TO "blue wool standard sample";
— CANCEL the reference of GB/T 8432-1987 "Humidity test control for color
fastness to light", and ADD the contents in 4.1.3;
— ADD the reference for GB/T 6682 "Water for laboratory use — Specifications";
— CANCEL the reference of GB/730 "Blue wool standard for color fastness to light
test" in 4.1.1, and CHANGE to the relevant requirements of ISO 105-B02.1994.
— CHANGE "... reach the temperature conditions specified in 4.2" in c) of
4.2.1.1.1 TO "... reach the temperature conditions specified in Chapter 6";
— ADD the 5.1.1, 5.1.2 and 5.1.3 in 5.1;
— COMBINE the former 7.2.1.2 and 7.2.1.5 into 7.2.2.2;
— CHANGE the former blue wool standard 3 in 7.2.2.3 TO blue wool standard
sample 4, and CHANGE the clause No. TO 7.2.3.3;
— CHANGE the former blue wool standard 4 in 7.2.2.4 TO blue wool standard
sample 6, and CHANGE the clause No. TO 7.2.3.4;
— CHANGE the former "... continuously insolated till the last piece of blue wool
standard ..." in 7.2.3 TO "... continuously insolated till the blue wool
standard sample at minimum allowable fastness ...", and CHANGE the
clause No. TO 7.2.4;
— ADD the Annex B "the air cooling type xenon arc lamp equipment are used to
determine the color fastness to light (flat plate type)". And the former annex
serial number was postponed;
— ADD the Annex E.
Annex A, Annex B and Annex C in this Standard are normative; Annex D and Annex E
are informative.
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/TC209/SC1).
Drafting organizations of this Standard. National Textile Quality Supervision Testing
Center, Q-Lab Experimental Equipments Corporation (Shanghai representative office),
Wenzhou Darong Textile Instrument Co., ltd, Shanghai Textile Industry Institute of
Technical Supervision, and Shanghai Wool and Jute Textile Research Institute.
Main drafters of this Standard. Li Zhien, Zhang Heng, Hao Chengzhen, Li Chun,
Zhang Qiping, Chen Xiaocheng, and Cao Xianhua.
The previous editions replaced by this Standard are.
— GB/T 8427-1987 and GB/T 8427-1998.
Textiles — Tests for color fastness — Color fastness to
artificial light. Xenon arc fading lamp test
1 Scope 
This Standard specifies a method intended for determining the resistance of the color
of textiles of all kinds and in all forms to the action of an artificial light source
representative of natural daylight (D65). This Standard is also applicable to white
(bleached or optically brightened) textiles.
This Standard allows the use of two different sets of blue wool standard samples. The
results may not be identical.
NOTE 1. Annex D gives the general information on color fastness to light.
2 Normative reference
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrections) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 250 Textiles — Tests for color fastness — gray scale for assessing change in
color (GB/T 250-2008, ISO 105-A02. 1993, IDT)
GB/T 6151 Textiles — Tests for color fastness — General principle of testing (GB/T
6151-1997, eqv ISO 105-A01. 1994)
GB/T 6682 Water for laboratory use — Specifications (GB/T 6682-1992, neq ISO
3696. 1987)
GB/T 8426 Textiles — Tests for color fastness — Color fastness to light. Daylight
(GB/T 8426-1998, eqv ISO 105-B01. 1994)
GB/T 8431 Textiles — Tests for color fastness — Detection and assessment of
photochromism (GB/T 8431-1998, eqv ISO 105-B 05. 1993)
FZ/T 01024 Ranking method for instrument of sample change color degree (GB/T
01024-1993, neq ISO 105-A05. 1992)
be perceived equal to gray scale Grade 4, then in the position shown in Figure 3,
PLACE the final covering EF, the other coverings remaining in original position.
7.2.3.5 Continue to expose, until there occurs one of the following situations.
a) A color difference produced on blue wool standard sample 7 or L7 equal to the
gray scale Grade 4;
b) A color difference produced on the most resistant specimen equal to gray scale
Grade 3;
c) For white (bleached or optically brightened) textiles, a color difference produced
on the most resistant specimen equal to gray scale Grade 4;
NOTE 4. a) and b) may occur before 7.2.3.3 or 7.2.3.4.
7.2.4 Method 3
This method is applicable for checking conformity with a performance specification, it
is permissible to expose the specimens with two blue wool standard samples only.
that is one blue wool standard sample specified as minimum allowable fastness and
one blue wool standard samples below it. CONTINUE exposure, until the separate
areas of blue wool standard sample specified as minimum allowable fastness equal to
the color difference between gray scale Grade 4 (first stage) and Grade 3 (second
stage). For white (bleached or optically brightened) textiles, CONTINUE exposure
until the separate areas of blue wool standard sample specified as minimum allowable
fastness equal to the gray scale Grade 4.
7.2.5 Method 4
This method is applicable for checking conformity with an agreed-upon reference
sample, it is permissible to expose the specimens with the reference sample only.
CONTINUE exposure until the color difference produced on the reference s...