GA/T 1659-2019 English PDF

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GA/T 1659-2019: Forensic sciences - Examination methods for cashmere fibers - Biological microscopy
Status: Valid

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Basic data

Standard ID: GA/T 1659-2019 (GA/T1659-2019)
Description (Translated English): Forensic sciences - Examination methods for cashmere fibers - Biological microscopy
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 10,119
Date of Issue: 2019
Date of Implementation: 2019-12-01
Issuing agency(ies): Ministry of Public Security

GA/T 1659-2019: Forensic sciences - Examination methods for cashmere fibers - Biological microscopy

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Forensic sciences - Examination methods for cashmere fibers - Biological microscopy ICS 13.310 A92 Public Safety Industry Standard of the People's Republic of China Forensic cashmere fiber inspection Biomicroscopy microscopy Published on October 14,.2019 2019-12-01 Implementation Issued by the Ministry of Public Security of the People's Republic of China

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some content of this document may involve patents. The issuer of this document does not assume responsibility for identifying these patents. This standard is proposed by the National Criminal Technology Standardization Technical Committee Physical and Chemical Inspection Sub-Technical Committee (SAC/TC179/SC4) and Be in charge. This standard was drafted by. Inner Mongolia Autonomous Region Public Security Department, Ordos City Public Security Bureau, Ministry of Public Security Material Evidence Appraisal Center. Drafters of this standard. Yi Liye, Wei Zhenxuan, Shi Huixia. Forensic cashmere fiber inspection Biomicroscopy

1 Scope

This standard specifies the biological microscope inspection method of cashmere fiber in the field of forensic science. This standard is applicable to the morphological analysis of cashmere fibers in the field of forensic science by biomicroscopy. It can also be used in other fields.

2 Normative references

The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. GB 18267 cashmere

3 Terms and definitions

The terms and definitions defined in GB 18267 apply to this document.

4 Principle

Cashmere is cashmere (general name for goat raw cashmere, over-round cashmere, washed cashmere, carded cashmere), and sheep has no cashmere. Cashmere is a natural egg White, is a thin layer of fine velvet that grows on the outer skin layer of goats.Its appearance and structure are obviously different from other common animal hair fibers. (See Appendix A). Can be effectively distinguished and identified under a biological microscope.

5 Reagents and materials

Reagents and materials include. a) Glycerin distilled water mixture (volume ratio is 1.1); b) Distilled water; c) Petroleum ether or ether; d) collodion; e) tweezers; f) Slides and coverslips; g) adhesive tape; h) Glass or plastic bottles.

6 Instruments and equipment

Instruments and equipment include. a) Biological microscope (equipped with digital camera and display); b) Hastelloy slicer. ......

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