GA/T 2004-2022 in English

VALID

Forensic sciences-Technical specifications for latent fingerprint development by oil red 0

Issued on:2022-09-16
Implemented on:2023-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $60.00
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Standard No:	GA/T 2004-2022
Document status:	VALID
Title in English:	Forensic sciences-Technical specifications for latent fingerprint development by oil red 0
Title in Chinese:	法庭科学油红O显现手印技术规范
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-09-16
Implemented on:	2023-01-01
ICS Classification:	13.310-Protection against crime
Chinese Classification:	A92-Crime judging technology
Professional Classification:	GA-Security
Related Keywords:	oil red o visualization technology latent fingerprint development oil red o standard oil sample3 forensic sciences-technical specifications
Related Topics:	oil red Forensic Science Iodine Fumigation Appears Fingerprint Method scientific testing techniques handprint forensic science infrared mammoth modern scientific method oil red method forensic science Department of Technology and Science modern scientific modern scientist court appear modern science way of modern science modern scientist international forensic science t/cmatb 2004-2022

Introduction

Technical Specification Core Interpretation

This specification establishes a standardized operating system for the Oil Red O visualization technology, focusing on solving the visualization problem of grease fingerprints on complex carriers (especially water-immersed objects). The technical principle is based on the specific binding reaction of Oil Red O and lipid substances, and the staining sensitivity reaches 0.1μg/cm².

Comparison of standard frameworks

Dimensions	This specification	Traditional methods
Applicable objects	Water immersion/impermeability	Dry impermeability
Development time	3-5 minutes	10-15 minutes
Reagent stability	6 months(4℃ protected from light)	3 months

Key technical parameters

Experimental data show that the success rate of revealing old fingerprints on polyethylene carriers has increased by 42%. Typical case: After the murder weapon was salvaged from a certain water area in Chongqing in 2021, the suspect's complete knuckle prints were successfully extracted through standardized operations.

Reagent concentration: 0.2-0.5% ethanol solution
Environmental requirements: Temperature 18-25℃, humidity ≤65%
Color control: UV lamp assisted observation

Implementation suggestions

1. Pretreatment stage: The water-immersed object must first be subjected to gradient dehydration treatment
2. Quality control: Each batch of reagents must be tested with a standard oil sample
3. Safety protection: Operators should be equipped with N95 masks and nitrile gloves

More samples: JGJ 94-2008 JC/T 2453-2018 DL/T 5154-2012

Sample only — not a preview of GA/T 2004-2022

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