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GA/T 1438-2017: Technical specifications for latent fingerprint development by fluorescent powder in Forensics
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| GA/T 1438-2017 | English | 139 |
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Technical specifications for latent fingerprint development by fluorescent powder in Forensics
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GA/T 1438-2017
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Basic data | Standard ID | GA/T 1438-2017 (GA/T1438-2017) | | Description (Translated English) | Technical specifications for latent fingerprint development by fluorescent powder in Forensics | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 6,656 | | Date of Issue | 2017-11-20 | | Date of Implementation | 2017-11-20 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1438-2017: Technical specifications for latent fingerprint development by fluorescent powder in Forensics
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Technical specifications for latent fingerprint development by fluorescent powder in Forensics
ICS 13.310
A92
Public Safety Industry Standard of the People's Republic of China
Forensic Science Fluorescent Powder Showing Handprint Technical Specifications
Published on.2017-11-20
2017-11-20 Implementation
The Ministry of Public Security
Foreword
This standard was 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. Publication of this document
The agency does not assume responsibility for identifying these patents.
This standard was proposed by the Technical Committee on Fingerprint Inspection Subcommittee of the National Criminal Technology Standardization Technical Committee (SAC/TC179/SC3).
In the mouth.
This standard was drafted by the Hubei Police Academy and the Public Security Bureau Material Evidence Identification Center.
The main drafters of this standard. Zhang Jian, Zhang Miaomiao, Ma Rongliang, Qu Huiying, Xue Jing, Duan Ye, Bi Dayu, Qiu Zhao, and Liu Yan.
Forensic Science Fluorescent Powder Showing Handprint Technical Specifications
1 Scope
This standard stipulates the applicable objects, equipment, reagents, experimental environment requirements, and operating procedures of the Forensic Scientific Fluorescent Powder Appearance fingerprinting method.
Precautions.
This standard is applicable to revealing the potential fingerprints on most dry non-permeable objects and a few semi-permeable objects with short remaining time.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GA/T 144 Forensic Scientific Fingerprinting Terminology
3 Terms and definitions
The following terms and definitions as defined in GA/T 144 apply to this document.
3.1
Fluorescent powder fluorescentpowder
The fluorescent powder can be excited under irradiation with a certain wavelength of excitation light.
4 The principle of appearance
The fingerprint substance and the fluorescent powder produce physical adsorption. Select different fluorescent powders according to the color of the object to adjust the brightness of the fingerprint and the background
Distribution, the powder particles attached to the ridge line, under the excitation of the irradiation of the radiation, the lines emit different colors of fluorescence, which shows the fingerprint.
5 Equipment, reagents, and experimental environment requirements
5.1 Equipment
5.1.1 Fingerprint Brush
Magnetic fingerprint brush, animal hair brush, chemical fiber brush, integrated powder fingerprint brush and so on.
5.1.2 Excitation light source
Multi-band light source, blue light, ultraviolet light, laser light source, infrared light source, etc.
5.1.3 Photographic equipment
Digital camera or other image capture device, macro lens, camera mount.
5.1.4 Cut Filter
Long-pass filters, short-pass filters, band-pass filters, UV goggles or face masks, gloves, headgear, masks, scales, ear syringes.
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