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GB/T 13835.7-2009: Test method for rabbit hair -- Part 7: Whiteness
Status: Valid GB/T 13835.7: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13835.7-2009 | English | 139 |
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Test method for rabbit hair -- Part 7: Whiteness
| Valid |
GB/T 13835.7-2009
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| GB/T 13835.7-1992 | English | 199 |
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2 days [Need to translate]
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Test method for whiteness of Angora rabbit hair
| Obsolete |
GB/T 13835.7-1992
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PDF similar to GB/T 13835.7-2009
Basic data | Standard ID | GB/T 13835.7-2009 (GB/T13835.7-2009) | | Description (Translated English) | Test method for rabbit hair -- Part 7: Whiteness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W20 | | Classification of International Standard | 59.060.01 | | Word Count Estimation | 6,670 | | Date of Issue | 2009-04-23 | | Date of Implementation | 2009-09-01 | | Older Standard (superseded by this standard) | GB/T 13835.7-1992 | | Quoted Standard | GB/T 6529; GB/T 8170; GB/T 13835.1 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.5 (Total No.145) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for the determination of whiteness with white fur meter. This section applies to the determination of rabbit whiteness. | GB/T 13835.7-2009: Test method for rabbit hair -- Part 7: Whiteness---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for rabbit hair Part 7. Whiteness
ICS 59.060.01
W20
National Standards of People's Republic of China
Replacing GB/T 13835.7-1992
Angora fiber test methods - Part 7. Whiteness
Posted 2009-04-23
2009-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 13835 "rabbit fiber test method" consists of the following nine sections.
--- Part 1. Sampling;
--- Part 2. The average length and short hair ratio manual transmission method;
--- Part 3. impurity rate, coarse hair and loose hair rate;
--- Part 4. Regain oven method;
--- Part 5. single fiber breaking strength and elongation at break;
--- Part 6. diameter projection microscopy;
--- Part 7. whiteness;
--- Part 8. ether extract content;
--- Part 9. crimp performance.
This section GB/T 13835 Part 7.
This Part replaces GB/T 13835.7-1992 "fur fiber whiteness test methods."
This section compared with the GB/T 13835.7-1992 The main changes are as follows.
--- Increase the whiteness of terms and definitions (edition 3.3);
--- Modify the preset humidity, the humidity and atmospheric testing standards (Edition 1992 Chapter 5; Chapter 7 of this edition).
This section proposed and managed by China Fiber Inspection Bureau.
This section is drafted. Sichuan Provincial Fiber Inspection Bureau, Zhejiang Province Fiber Inspection Bureau.
The main drafters of this section. Pingxiang Yun Weng Grace, had Rong, Liu, Liu Cai Rong.
This part of the standard replaces the previous editions are.
--- GB/T 13835.7-1992.
Angora fiber test methods - Part 7. Whiteness
1 Scope
GB/T 13835 in this section specifies the method for the determination of whiteness with white fur meter.
This section applies to the determination of rabbit whiteness.
2 Normative references
The following documents contain provisions which, through reference GB/T 13835 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, we are encouraged to reach agreement under this section
All parties that proposed to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 6529 Textiles Standard conditioning and testing atmosphere
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
GB/T 13835.1 rabbit hair fiber test methods - Part 1. Sampling
3 Terms and Definitions
The following terms and definitions apply GB/T 13835 in this section.
3.1
Lab color space system three-dimensional Cartesian coordinate system specified in CIE lightness coordinates.
3.2
Lab color space system three-dimensional Cartesian coordinate system specified in CIE chromaticity index.
3.3
In the CIE color system stipulated in the white matter of the degree of surface white one-dimensional evaluation.
Principle 4
With whiteness meter irradiation same stability and the same color temperature light source, and a standard whiteness plate as the base of rabbit hair fibers reflectance of
Ratio measured by appropriate means indicates the whiteness of the rabbit, or calculate the corresponding parameters whiteness values.
5 equipment and instruments
5.1 meets the following indicators can be used any type of whiteness meter.
a) measurement window;
b) whiteness meter optical conditions can be used. vertical/diffusing (0/d), diffusion/vertical (d/0), 45 °/vertical (45/0) and vertical/45 °
(0/45) of any kind;
c) Stability. The instrument should be in the boot 0.5h, zero drift is not greater than 0.3, showing the value of drift is not greater than 0.5;
d) the repeatability of the instrument should be used under the same conditions of a sample, tested once every 0.5h, any two of the three measurement results
The difference is not more than 0.3%;
e) The instrument should be equipped with a sample cell, the sample cell light-transmissive element should be optical glass;
f) Working standard whiteness plate should be in the test cycle.
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