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GB/T 17749-2008 English PDF

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GB/T 17749-2008: Methods of whiteness specification
Status: Valid

GB/T 17749: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 17749-2008	English	189	Add to Cart	3 days [Need to translate]	Methods of whiteness specification	Valid	GB/T 17749-2008
GB/T 17749-1999	English	319	Add to Cart	3 days [Need to translate]	Methods of whiteness specification	Obsolete	GB/T 17749-1999

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Basic data

Standard ID	GB/T 17749-2008 (GB/T17749-2008)
Description (Translated English)	Methods of whiteness specification
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	A26
Classification of International Standard	17.180.20
Word Count Estimation	8,812
Date of Issue	2008-05-04
Date of Implementation	2008-10-01
Older Standard (superseded by this standard)	GB/T 17749-1999
Quoted Standard	GB/T 3979; GB/T 5698; GB/T 9340
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 object color representation of whiteness. This standard applies to white and near " white" object color representation.

GB/T 17749-2008: Methods of whiteness specification

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Methods of whiteness specification ICS 17.180.20 A26 National Standards of People's Republic of China Replacing GB/T 17749-1999 Representation of whiteness Posted 2008-05-04 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 17749-1999 "representation of whiteness." This standard compared with GB/T 17749-1999, the main changes as follows. Calculation --- whiteness according CIE2004 formula to be. Appendix A of this standard is the data appendix. This standard by the national standardization whiteness standard sample Technical Working Group and centralized. This standard was drafted. building materials industry and technical supervision research center, Beijing Kang Optical Instrument Co., Ltd., China Institute of Metrology, Pingdu City, Shandong Province Talc Mines Ltd., Beijing Optical Instrument Factory, Guilin wide Talc Development Co., Pingdu City, Shandong Province Talc Mine Co., Ltd., Liaoning talc Yihai Mines Ltd., Longyan Kaolin Co., Ltd., Liaoning Instrument Research Institute Co., Ltd., Beijing Xingguang color measurement instrument company, Konica Minolta, Shanghai Jin Jia Scientific Instrument Co., Ltd., Dalian Building Research Institute shares have Ltd., CNNC Hua Yuan Titanium Dioxide Co., Ltd., Beijing Xingguang color measurement instrument company, Jinzhou District of Dalian City Construction Engineering Quality Supervision Station. The main drafters of this standard. Wang Huan, Ma Yu, Wang Feng, Zhang Zhong in, Ying Qi, Lude Yun, Yin Taian, Li Wensheng, Li Jihong, Wu Xintao, Kingdom hair, Yu Yong, Chen Donghua. This standard replaces the standards previously issued as follows. --- GB/T 17749-1999. Representation of whiteness

1 Scope

This standard specifies the representation of the object color of whiteness. This standard applies to nearly white and "white" object color representation.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Methods of measurement GB/T 3979 object colors GB/T 5698 color terms Relative measurement method GB/T 9340 fluorescent color samples

3 Terms and Definitions

GB/T 5698 and established the following terms and definitions apply to this standard. 3.1 Characterization of the extent of white color object, represented by the symbol W or W10. Whiteness, the greater the degree of the white. Whiteness is totally reflected diffuser 100. 3.2 Characterization of the degree of white light in color, with the symbol TW or TW10 representation. Tinge index is positive, the greater its value the more greenish degree Large; on the contrary, tinted index is negative, the greater the absolute value of the greater degree of reddish. Tinge index totally reflecting diffuser is 0.

4 color measurement method

4.1 Non-fluorescent colors Spectral measurement of non-fluorescent color in accordance with the provisions of GB/T 3979 progresses, and calculate the tristimulus values \u200b\u200bX, Y, Z, or X10, Y10, Z10. Non-fluorescent color tristimulus value direct reading measurement according to the provisions of GB/T 3979 were directly measured tristimulus values \u200b\u200bX, Y, Z, or X10, Y10, Z10. 4.2 fluorescent colors Fluorescence spectroscopy and color tristimulus value direct reading (colorimeter) was measured according to the provisions of GB/T 9340 will be.

5 Measurement of whiteness

5.1 Non-fluorescent colors Whiteness measuring non-fluorescent colors, measuring 4.1 according to the provisions of the tristimulus values \u200b\u200bX, Y, Z, or X10, Y10, Z10, calculated in accordance with the provisions of Chapter 6 A W or W10 and tinted index TW or TW10. 5.2 fluorescent colors White fluorescent color measurement, measuring 4.2 according to the provisions of the tristimulus values \u200b\u200bX, Y, Z, or X10, Y10, Z10, calculated in accordance with the provisions of Chapter 6 of the

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