GB/T 250-2008 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB/T 250-2008: Textiles -- Tests for colour fastness -- Grey scale for assessing change in colour Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 250: Historical versions
GB/T 250-2008: Textiles -- Tests for colour fastness -- Grey scale for assessing change in colour---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT250-2008 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA GB/T 250-2008 / ISO 105-A02.1993 Replacing GB 250-1995 Textiles - Tests for colour fastness - Grey scale for assessing change in colour (ISO 105-A02.1993, IDT) Issued on. AUGUST 06, 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 of the People’s Republic of China. Table of ContentsForward... 3 1 Scope... 4 2 Principle... 4 3 Describing colour changes in fastness tests... 6 Forward This Standard, using translation method, equivalently adopts ISO 105-A02.1993 “Textiles - Test for colour fastness - Part A02.Grey scale for assessing change in colour” (English version) and its Technical Corrigendum 2.2005. This Standard makes the following editable modifications. - The term “this part of ISO 105” is replaced by “this Standard”; - Forward of ISO 105-A02.1993 is deleted; - The content of ISO 105-A02.2005-Technical Corrigendum 2 is integrated into the relevant clauses. This Standard replaces GB 250-1995 “Grey scale for assessing change in colour”. Comparing this Standard with GB 250-1995, the main changes are shown as follows. - Change the standard name to be “Textiles - Test for colour fastness - Grey scale for assessing change in colour”; - Change this Standard from mandatory standard to recommended standard; - Add, when using grey scale, the surrounding field and covering material color’s requirements. This Standard was proposed by China National Textile and Apparel Council. This Standard shall be under the jurisdiction of Basis Branch of National Textile Standardization Technology Committee (SAC/TC 209/SC 1). Drafting organizations of this Standard. Shanghai Textile Industry Technology Supervision Firm, Shanghai Textile Science Research Institution. Chief drafting staffs of this Standard. Chen Xiao hen, Zhang Zheng, Wang Zhongzhao. The issuing status of the historical version of the standards that are replaced by this Standard is as follows. - GB 250-1964, GB 250-1984, GB 250-1995. Textiles - Tests for colour fastness - Grey scale for assessing change in colour1 ScopeThis Standard describes the grey scale for determining changes in colour of textiles in colour fastness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working standards and standards that may have changed can be compared.2 PrincipleThe chips or swatches shall be neutral grey in colour and shall be measured with a spectrophotometer with the specular component included. The colorimetric data shall be calculated using CIE 1964 supplementary standard colorimetric system (10° observer data) for illuminant D65.3 Describing colour changes in fastness testsWhen changes in colour occur in two or three directions, it is considered neither feasible nor necessary to indicate the relative magnitude of each change. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 250-2008 be delivered?Answer: The full copy PDF of English version of GB/T 250-2008 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 250-2008_English with my colleagues?Answer: Yes. 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