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GB/T 2910.7-2025: Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibers (method using formic acid) 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 2910.7: Historical versions
Similar standardsGB/T 2910.7-2025: Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibers (method using formic acid)---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/GBT2910.7-2025 GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA ICS 59.080.01 CCS W 04 Replacing GB/T 2910.7-2009 Textiles - Quantitative chemical analysis - Part 7.Mixtures of polyamide with certain other fibers (method using formic acid) (ISO 1833-7.2017, MOD) Issued on: FEBRUARY 28, 2025 Implemented on: MARCH 1, 2027 Issued by. State Administration for Market Regulation; Standardization Administration of PRC. Table of ContentsForeword... 3 Introduction... 7 1 Scope... 9 2 Normative references... 9 3 Terms and definitions... 9 4 Principle... 10 5 Reagents... 10 6 Equipment... 10 7 Test steps... 10 8 Calculation and presentation of results... 11 9 Precision... 11 References... 12ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents. This document is Part 7 of GB/T 2910 Textiles - Quantitative chemical analysis. The following parts of GB/T 2910 have been published. -- Part 1.General principles of testing; -- Part 2.Ternary fibre mixture; -- Part 3.Mixtures of acetate and certain other fibres (method using acetone); -- Part 4.Mixtures of certain protein fibres with certain other fibres (method using hypochlorite); -- Part 5.Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate); -- Part 6.Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride); -- Part 7.Mixtures of polyamide with certain other fibers (method using formic acid); -- Part 8.Mixtures of acetate and triacetate fibres (method using acetone); -- Part 9.Mixtures of acetate with certain other fibres (method using benzyl alcohol); -- Part 10.Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane); -- Part 11.Mixtures of certain cellulose fibres with certain other fibres (method using sulfuric acid); -- Part 12.Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide) -- Part 13.Mixtures of certain chlorofibers and certain other fibers (method using carbon disulfide/acetone) -- Part 14.Mixtures of acetate and certain chlorofibres (method using acetic acid); Textiles - Quantitative chemical analysis - Part 7.Mixtures of polyamide with certain other fibers (method using formic acid)1 ScopeThis document describes the method using formic acid for the determination of the fiber content of two-component mixtures of polyamide fibers and certain other fibers after removal of non-fibrous matter. -- polyamide fiber; -- cotton, viscose fiber, cuprammonium fiber, modal fiber, lyocell fiber, flax fiber, ramie fiber, hemp fiber, polyester fiber, polyethylene fiber, polypropylene fiber, chlorinated fiber, polyacrylonitrile fiber, glass fiber, polyester composite elastic fiber, polyolefin elastic fiber, melamine fiber, sheep wool or other animal hair fibers. This document does not apply to two-component mixtures of sheep wool or other animal hair fibers, whose fiber content exceeds 25%, with polyamide fiber.2 Normative referencesThe provisions of the following documents constitute the essential clauses of this document through normative references in this text. Among them, for referenced documents with dates, only the versions corresponding to the dates are applicable to this document; for referenced documents without dates, the latest versions (including all amendments) are applicable to this document. GB/T 2910.1 Textiles - Quantitative chemical analysis - Part 1.General principles of testing (GB/T 2910.1-2009, ISO 1833-1.2006, IDT)3 Terms and definitionsThere are no terms or definitions that require definition in this document. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
