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GB/T 8424.2-2001Textiles -- Tests for colour fastness -- Instrumental assessment of relative whiteness (English PDF)

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Issued by

State Quality and Technical Supervision

Level / Type

National · Recommended

Issue date

February 26, 2001

Implementation date

September 1, 2001

Scope

GB/T 8424.2-2001 (Textiles -- Tests for colour fastness -- Instrumental assessment of relative whiteness) is available as an English-translated PDF.

GB/T 8424.2-2001 — This standard specifies: a quantitative assessment including fluorescent materials, including textile and light colors whiteness index measuring methods.

Determined by this method whiteness appear as a Textiles shows the number of whiteness. Pale hue index is displayed as long wavelength 466nm- neutral colors other than zero reddish or greenish tint drift show number.

Whiteness and light colors index calculated as recommended by the CIE (International Commission on Illumination). This standard applies to: similar textile samples for comparison.

Formula only in the business sector as "white" the use of the sample, sample color fluorescent areas poor conductivity can not be too large, and the interval is not long measured on the same instrument intrinsic time.

Even within these limited range of conditions, This formula provides it is only relative White evaluation, rather than absolute whiteness evaluation. Just use more advanced measuring instruments, technical conditions are right in the commercial and industrial, then this evaluation for the commercial and industrial Application is enough -.

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Document preview — GB/T 8424.2-2001

National Standard of the People's Republic of China

ICS: 59.080.01
Classification: W 04
Replacing: GB/T 8425-1987

Issued by: State Quality and Technical Supervision

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This standard specifies: a quantitative assessment including fluorescent materials, including textile and light colors whiteness index measuring methods. Determined by this method whiteness appear as a Textiles shows the number of whiteness. Pale hue index is displayed as long wavelength 466nm- neutral colors other than zero reddish or greenish tint drift show number. Whiteness and light colors index calculated as recommended by the CIE (International Commission on Illumination). This standard applies to: similar textile samples for comparison. Formula only in the business sector as "white" the use of the sample, sample color fluorescent areas poor conductivity can not be too large, and the interval is not long measured on the same instrument intrinsic time. Even within these limited range of conditions, This formula provides it is only relative White evaluation, rather than absolute whiteness evaluation. Just use more advanced measuring instruments, technical conditions are right in the commercial and industrial, then this evaluation for the commercial and industrial Application is enough -. This standard applies

Document data

International classification (ICS): 59.080.01.

Chinese classification (CCS): W04.

Estimated length of the Chinese original: 9,977 words.

Adopted international standard: ISO 105-J02-1997; MOD.

Supersedes the earlier edition GB/T 8425-1987.

Standards quoted by this document

GB/T 3979-1997; GB/T 5698-1985; GB/T 8424.1-2001

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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