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GA/T 1651-2019 English PDF

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GA/T 1651-2019: Forensic sciences--Technical specifications for fingerprint development by vacuum deposition system
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PDF similar to GA/T 1651-2019


Standard similar to GA/T 1651-2019

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Basic data

Standard ID GA/T 1651-2019 (GA/T1651-2019)
Description (Translated English) Forensic sciences--Technical specifications for fingerprint development by vacuum deposition system
Sector / Industry Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard A92
Classification of International Standard 13.310
Word Count Estimation 6,663
Date of Issue 2019
Date of Implementation 2019-12-01
Issuing agency(ies) Ministry of Public Security

GA/T 1651-2019: Forensic sciences--Technical specifications for fingerprint development by vacuum deposition system


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Forensic sciences--Technical specifications for fingerprint development by vacuum deposition system ICS 13.310 A92 Public Safety Industry Standards of the People's Republic of China Forensic Science Vacuum Coating Display Fingerprint Technical Specifications 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 Fingerprint Inspection Sub-Committee of the National Criminal Technology Standardization Technical Committee (SAC/TC179/SC3) and Be in charge. This standard was drafted by. Shanghai Municipal Public Security Bureau Material Evidence Appraisal Center, Ministry of Public Security Material Evidence Appraisal Center. The main drafters of this standard. Zhang Weifang, Sun Shengjun, Liu Huan, Liang Yanlin, Qu Huiying, Li Xiaojun, Xue Jing. Forensic Science Vacuum Coating Display Fingerprint Technical Specifications

1 Scope

This standard specifies the principle, equipment, coating materials and laboratory environment requirements, development preparation and operation steps of vacuum coating visualization handprint technology Steps and precautions. This standard is applicable to the display of most non-permeable and partially semi-permeable, permeable object surface potential fingerprints, including some "502" gum smoked The object after the show.

2 Normative references

The following documents are essential for the application of this document. For dated references, 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 144 Forensic Science Fingerprint Terminology

3 Terms and definitions

The terms and definitions defined in GA/T 144 and the following apply to this document. 3.1 Coating vacuum degreeofdepositionvacuum When the coating shows the fingerprint, it shows the vacuum required in the container. 3.2 Coating deposition The process of plating dielectric film on the surface of the object. 3.3 Evaporation source meltingpot A high-temperature heating device that evaporates coating materials into gas. 3.4 Development angle The angle between the left surface of the displayed object fingerprint and the horizontal direction. 3.5 Appearance distance developmentdistance The distance between the left part of the displayed object fingerprint and the evaporation source. 3.6 Evaporation time meltingtime The time for the coating material to volatilize when heated. 3.7 Evaporating current meltingelectriccurrent The current when the evaporation source is heated.

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