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GA/T 1691-2020: Forensic sciences - Technical specifications for latent bloody fingerprint developed by Amido Black 10B
Status: Valid GA/T 1691: Evolution and historical versions
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Forensic sciences - Technical specifications for latent bloody fingerprint developed by Amido Black 10B
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Basic data | Standard ID | GA/T 1691-2020 (GA/T1691-2020) | | Description (Translated English) | Forensic sciences - Technical specifications for latent bloody fingerprint developed by Amido Black 10B | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 6,699 | | Date of Issue | 2020-03-12 | | Date of Implementation | 2020-05-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1691-2020: Forensic sciences - Technical specifications for latent bloody fingerprint developed by Amido Black 10B
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(Forensic Science Technical Specification for Amino Black 10B to Reveal Occult Blood Fingerprint)
ICS 13:310
A92
Public Safety Industry Standards of the People's Republic of China
Forensic Science Amino Black 10B shows occult blood fingerprints
specifications
byAmidoBlack10B
2020-03-12 released
2020-05-01 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 certain contents of this document may involve patents: The issuing agency of this document is not responsible 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
Focus:
Drafting organizations of this standard: Criminal Science and Technology Research and Management Center of Shanghai Public Security Bureau, China Criminal Police Academy:
The main drafters of this standard: Zhang Weifang, Zhang Zhongliang, Liang Yanlin, Sun Shengjun, Zhang Limei:
Forensic Science Amino Black 10B shows occult blood fingerprints
specifications
1 Scope
This standard stipulates the principle, applicable objects, equipment, reagents, and experiments of the method for developing occult blood fingerprints with amino black 10B in the field of forensic science
Room environment requirements, operation steps and precautions:
This standard is applicable to showing occult blood fingerprints on the surface of non-permeable and semi-permeable objects with a light background color:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GA/T 144 Fingerprint terminology
3 Terms and definitions
The following terms and definitions defined in GA/T 144 apply to this document:
3:1
Amido Black 10B AmidoBlack10B
A protein stain with the molecular formula C22H14N6Na2O9S2:
Note: Amino black 10B is a dark brown powder, soluble in water, the aqueous solution is blue-black, soluble in ethanol, blue, slightly soluble in acetone: The dyeing reaction is sensitive: To people
Skin and eyes are irritating, harmful if inhaled:
4 Appearance principle
Amido Black 10B can stain proteins in the blood, making the protein traces blue-black, thus showing occult blood fingerprints:
5 Equipment, reagents, laboratory environment requirements
5:1 Equipment
Balance, measuring cylinder, glass rod, tweezers, dropper, tray, absorbent cotton, fume hood, camera and light source, etc:
5:2 Reagents
Amino black 10B, acetic acid, absolute ethanol:
5:3 Laboratory environment requirements
Hygiene, clean and well ventilated:
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