GB/T 40905.1-2021Textiles - Quantitative analysis of cashmere, wool, other specialty animal fibres and their blends - Part 1: Light microscopy method (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
October 11, 2021
Implementation date
May 1, 2022
Scope
GB/T 40905.1-2021 (Textiles - Quantitative analysis of cashmere, wool, other specialty animal fibres and their blends - Part 1: Light microscopy method) is available as an English-translated PDF.
GB/T 40905.1-2021 is the Chinese standard "Textiles - Quantitative analysis of cashmere, wool, other specialty animal fibres and their blends - Part 1: Light microscopy method".
Its scope clause reads: This document specifies the qualitative and quantitative analysis of cashmere, sheep wool, other special animal fibers and their mixtures using an optical microscope.
Analysis method. This document applies to cashmere, sheep wool, other special animal fibers and their mixtures, including loose fibers, semi-finished products and finished products. Its clauses include terms and definitions.
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Document preview — GB/T 40905.1-2021
National Standard of the People's Republic of China
- Classification
- W 04
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Instruments, tools and reagents
- 5.1 Instrument
- 5.2 Tool
- 5.3 Reagent
- 6 Extraction and humidity control of laboratory samples
- 7 Preparation of the sample
- 7.1 Number of samples
- 7.2 Sample preparation method
- 7.3 Pretreatment of laboratory samples
- 8 Test Step
- 8.1 Use the objective micrometer to set the magnification
- 8.2 Fiber analysis and diameter measurement
- 9 Calculation and expression of test results
- 9.1 Calculation of test results of samples
- 9.2 Presentation of test results
- 10 Test report
- Appendix A (Normative) Methods of sampling laboratory samples
- Appendix B (informative) Decolorization of dark samples
- Appendix C (informative) Surface morphological characteristics of commonly used animal fibers
- Appendix D (normative) Common animal fiber density
1 Scope
This document specifies the qualitative and quantitative analysis of cashmere, sheep wool, other special animal fibers and their mixtures using an optical microscope.
Analysis method.
This document applies to cashmere, sheep wool, other special animal fibers and their mixtures, including loose fibers, semi-finished products and finished products.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 6529 Standard atmosphere for textile humidity control and testing (GB/T 6529-2008, ISO 139.2005, MOD)
GB/T 10685-2007 Wool fiber diameter test method projection microscope method
GSB02-2769 Cashmere Fineness Standard Sample
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Specialtyanimalfibre
In addition to sheep wool fiber obtained from sheep, a general term for keratin fibers obtained from other animals.
Note. Special animal fibers include cashmere, camel hair, yak hair, mohair, angora rabbit hair, alpaca hair, etc.
3.2 Lightmicroscope
An optical instrument that uses visible light as an illuminating light source and uses optical principles to magnify images.
Note. The optical microscopes used for fiber identification mainly include projection microscopes and microscopic image analyzers. A microscope equipped with a micrometer scale can also be used.
3.3 Scale
The stratum corneum covering the surface of animal hair fibers.
3.4 Scale density scalefrequency
The number of scales (3.3) per unit length along the fiber axis.
3.5 Scale thickness scaleheight
The height between the scale (3.3) and the axial edge of the fiber.
GB/T 40917 | GB/T 40912 | GB/T 40910 | GB/T 40905.2 | GB/T 40903 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 91 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 10685-2007 — Wool -- Determination of fiber diameter -- Projection microscope method
GB/T 6529-2008 — Textiles - Standard atmospheres for conditioning and testing
GB/T 40905.2-2022 — Textiles - Quantitative analysis of cashmere, wool, other specialty animal fibres and their blends - Part 2: Scanning electron microscopy method
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GB/T 40905.1-2021
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