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GA/T 1239-2015: Technical specifications for latent fingerprint development by ninhydrin in forensic science
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| GA/T 1239-2015 | English | 149 |
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Technical specifications for latent fingerprint development by ninhydrin in forensic science
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GA/T 1239-2015
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Basic data | Standard ID | GA/T 1239-2015 (GA/T1239-2015) | | Description (Translated English) | Technical specifications for latent fingerprint development by ninhydrin in forensic science | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 5,524 | | Date of Issue | 2015-02-11 | | Date of Implementation | 2015-02-11 | | Quoted Standard | GA/T 144-1996 | | Regulation (derived from) | Notice on Publication of Public Safety Industry Standard (Year 2015); Industry Standard Record Announcement No. 2016 (No. 197) | | Issuing agency(ies) | Ministry of Public Security | | Summary | This standard specifies the principles, equipment, reagents, laboratory environmental requirements, operating procedures, and precautions for the ninhydrin display fingerprinting method. This standard applies to the development of potential fingerprints on isoparametric objects on most papers. | GA/T 1239-2015: Technical specifications for latent fingerprint development by ninhydrin in forensic science
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Technical specifications for latent fingerprint development by ninhydrin in forensic science
ICS 13.310
A92
People 's Republic of China Public Security Industry Standard
Technical code for fingerprints of ninhydrin in forensic science
Released by.2015-02-11
2015-02-11 implementation
Issued by the Ministry of Public Security of the People 's Republic of China
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. The release of this document
The Agency does not assume responsibility for identifying these patents.
This standard by the National Criminal Technology Standardization Technical Committee Fingerprint Inspection Standardization Subcommittee (SAC/TC179/SC3) to mention
Out of charge.
The drafting of this standard unit. the Ministry of Public Security evidence identification center.
The main drafters of this standard. song Huiying, Li Xiaojun, Wu Hao, Xue Jing.
Technical code for fingerprints of ninhydrin in forensic science
1 Scope
This standard specifies the principle, equipment, reagents, laboratory environmental requirements, operating procedures and precautions for ninhydrin display fingerprinting.
This standard applies to potential fingerprints that show the majority of paper and other permeable objects.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Glossary of Terms for Fingerprinting
3 terms and definitions
GA/T 144-1996 Definitions and the following terms and definitions apply to this document.
3.1
Ninhydrin
Also known as benzo pentanone, the formula for the C9H4O3 · H2O, a white crystal or light yellow crystalline powder, is widely used to detect ammonia,
Primary and secondary amines, especially amino acids, react with them to produce dark blue or purple condensates.
3.2
Hydrofluorone 7100 hydrogenfluorineether7100; HFE7100
A colorless clear, mild odor fluoride solution in which the methoxy-9 fluoroutane (C4F9OCH3) content is 99.5% and can be used
In the replacement of freon and other substances.
4 manifestation principle
Ninhydrin can react with the amino acids in the remnants of the fingerprints, and the reaction product is blue-violet, thereby presenting the fingerprints.
5 equipment, reagents, laboratory environmental requirements
5.1 equipment
Ninhydrin show cabinet, fume hood and so on.
5.2 Reagents
Ninhydrin, anhydrous ethanol, acetone, ethyl acetate, acetic acid, 1,1,2-trichloro-1,2,2-trifluoroethane, HFE7100 and the like.
5.3 Laboratory environment
Health clean and well ventilated.
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