GA/T 1682-2019 English PDF

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GA/T 1682-2019: Forensic sciences - Technical specifications for making impressed mark samples
Status: Valid

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GA/T 1682-2019	139	Add to Cart	3 days	Forensic sciences - Technical specifications for making impressed mark samples	Valid

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Basic data

Standard ID: GA/T 1682-2019 (GA/T1682-2019)
Description (Translated English): Forensic sciences - Technical specifications for making impressed mark samples
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 6,696
Date of Issue: 2019
Date of Implementation: 2019-12-01
Issuing agency(ies): Ministry of Public Security

GA/T 1682-2019: Forensic sciences - Technical specifications for making impressed mark samples

---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 - Technical specifications for making impressed mark samples ICS 13.310 A92 Public Safety Industry Standard of the People's Republic of China Forensic science technical specification for making samples of depression marks 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. Publication of this document The institution does not assume responsibility for identifying these patents. This standard was proposed by the National Criminal Technology Standardization Technical Committee Trace Inspection Sub-Committee (SAC/TC179/SC9) and Be in charge. This standard was drafted by. Shanghai Municipal Public Security Bureau Physical Evidence Evaluation Center, Ministry of Public Security Material Evidence Evaluation Center. The main drafters of this standard. Mi Zhongliang, Liu Jin, Li Wei, Yu Jianbin, Wang Zijin. Forensic science technical specification for making samples of depression marks

1 Scope

This standard stipulates the technical specifications for the production of samples of forensic depression marks in court. This standard is applicable to the preparation, implementation, sample model preparation and evaluation of forensic pit marks samples for forensic science.

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. GA/T 985-2012 Forensic science three-dimensional trace plaster mold extraction method GA/T 1200-2014 Forensic scientific evidence photometric inspection method

3 Terms and definitions

3.1 Depressed marks Deformation caused by the constant contact point between the tool and the object during the formation of the trace. 3.2 Making of impressed mark samples Use tools to strike, pry pressure, shear, and puncture the bearing objects to leave trace samples, and fix and extract the trace samples to make them suitable for Work on the comparison conditions for the indentation marks on site.

4 Materials

4.1 Bearing objects Wood, metal sheet, gypsum sheet, cardboard, plasticine, etc. 4.2 Molding materials Silicone rubber molding kit (containing silicone rubber, ethyl orthosilicate, dibutyltin laurate, dyes, etc.), fast curing silicone rubber kit (toothpaste type The packaging is divided into two groups, A and B), proofing paste, cellulose acetate film, plasticine, gypsum, granular polyvinyl chloride, glycerin, acetone, etc.

5 Auxiliary tools

Comparison microscope, stereo microscope, magnifying glass, scale bar, sub-gauge, scissors, wire cutters, rust remover, brush, photographic equipment and auxiliary light Source etc.

6 Sample production requirements

6.1 Depression mark sample bearing object should try to use the same or similar material as the inspection material depression mark bearing object. ......

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