GA/T 721.1-2021 English PDF

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GA/T 721.1-2021: General technical requirements for reagents of developing latent fingerprints - Part 1: Ninhydrin hydrate(NIN)
Status: Valid

GA/T 721.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GA/T 721.1-2021	169	Add to Cart	3 days	General technical requirements for reagents of developing latent fingerprints - Part 1: Ninhydrin hydrate(NIN)	Valid
GA 721.1-2007	159	Add to Cart	3 days	Reagents of development latent fingerprints--Part 1: ninhydrin	Obsolete

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Basic data

Standard ID: GA/T 721.1-2021 (GA/T721.1-2021)
Description (Translated English): General technical requirements for reagents of developing latent fingerprints - Part 1: Ninhydrin hydrate(NIN)
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 7,762
Date of Issue: 2021-10-14
Date of Implementation: 2022-05-01
Issuing agency(ies): Ministry of Public Security

GA/T 721.1-2021: General technical requirements for reagents of developing latent fingerprints - Part 1: Ninhydrin hydrate(NIN)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS13:310 CCSA92 People's Republic of China Public Security Industry Standards Replace GA 721:1-2007 General Technical Requirements for Potential Fingerprint Reagents Part 1: Ninhydrin (NIN) Released on 10-14-2021 2022-05-01 Implementation Released by the Ministry of Public Security of the People's Republic of China

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is Part 1 of GA/T 721 "General Technical Requirements for Reagents to Reveal Latent Fingerprints": GA/T 721 has issued the following part: --- Part 1: Ninhydrin (NIN); --- Part 2: 3,3',5,5'-Tetramethylbenzidine (TMB); --- Part 3: 1,8-diazofluoren-9-one (DFO); --- Part 4: 7-benzylamino-4-nitrobenzofurazan (BBD); --- Part 5: 1,2-Indandione (IDO): This document replaces GA 721:1-2007 "Reagents for Revealing Latent Fingerprints Part 1: Ninhydrin", and is consistent with GA 721:1-2007 In addition to structural adjustments and editorial changes, the main technical changes are as follows: --- Changed the scope (see Chapter 1, Chapter 1 of the:2007 edition); ---Deleted the molecular formula: C9H4O3 H2O, molecular weight: 178 (see Chapter 2 of the:2007 edition); ---Changed the titles of relevant chapters (see Chapter 3~Chapter 7, Chapter 3~Chapter 5 of the:2007 edition); --- Added the term "ninhydrin" (see 3:1); --- Added general provisions (see 5:1); --- Changed the quantitative method (see 5:2:1, 3:2:1 of the:2007 edition); --- Changed the measurement conditions (see 5:2:2, 3:2:2 of the:2007 edition); --- Added sampling and acceptance rules (see Chapter 6); --- Changed the packaging (see 7:1, 4:1 of the:2007 edition); --- Changed the flag (see 7:2, 4:2 of the:2007 edition); --- Added label (see 7:3); --- Changed the transportation (see 7:4, Chapter 5 of the:2007 edition); --- Changed the storage (see 7:5, Chapter 5 of the:2007 edition): Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Criminal Technology Standardization Technical Committee (SAC/TC179): This document was drafted by: Anhui Gongda Chemical Technology Co:, Ltd:, Physical Evidence Appraisal Center of the Ministry of Public Security: The main drafters of this document: Xu Lixin, Wan Chao, Zhong Lijing, Lu Liang, Xue Jing, Qin Qi, Qu Huiying, Liu Huan: This document was first published as GA 721:1-2007 in:2007, and this is the first revision:

Introduction

Reagent for displaying potential fingerprints is a special test for displaying and extracting potential physical evidence such as fingers and palm prints during on-site investigation and physical evidence inspection: agent, and can improve the extraction efficiency of potential evidence on the scene: GA/T 721 consists of 5 parts: --- Part 1: Ninhydrin (NIN): The purpose is to standardize the technique of the reagent ninhydrin in the process of visualization of latent fingerprints Require: --- Part 2: 3,3',5,5'-Tetramethylbenzidine (TMB): The purpose is to standardize the reagent 3,3',5,5'-tetramethylbenzidine in developing Technical Requirements in Potential Mudra Process: --- Part 3: 1,8-diazofluoren-9-one (DFO): The purpose is to standardize the use of the reagent 1,8-diazofluoren-9-one (DFO) in developing latent fingerprints technical requirements in the process: --- Part 4: 7-benzylamino-4-nitrobenzofurazan (BBD): The purpose is to standardize the reagent 7-benzylamino-4-nitrobenzofurazan (BBD) Technical requirements in the process of visualization of latent handprints: --- Part 5: 1,2-Indandione (IDO): The purpose is to standardize the technique of the reagent 1,2-indanedione (IDO) in the process of developing latent fingerprints: technical requirements: General Technical Requirements for Potential Fingerprint Reagents Part 1: Ninhydrin (NIN) Warning: some reagents and some test procedures used in this test method may lead to dangerous situations, the operator should take appropriate safety precautions measure:

1 Scope

This document specifies the quality requirements, test methods, inspection rules, packaging, signs, labels, transportation and storage of ninhydrin hydrate: This document applies to the production and detection of latent fingerprint reagent ninhydrin:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB 190 Dangerous Goods Packaging Marking GB/T 191-2008 Packaging, storage and transportation icon marks Preparation of GB/T 601-2016 Chemical Reagent Standard Titration Solutions GB/T 602-2002 Preparation of Standard Solutions for Determination of Impurities in Chemical Reagents GB/T 603-2003 Preparation of preparations and products used in test methods for chemical reagents GB/T 9722-2006 General Rules for Chemical Reagent Gas Chromatography GB 12463 General Technical Conditions for Transport Packaging of Dangerous Goods GB 15258 Regulations on Preparation of Chemical Safety Labels GB 15603 General rules for storage of commonly used dangerous chemicals HG/T 3921 Chemical Reagent Sampling and Acceptance Rules

3 Terms and Definitions

The following terms and definitions apply to this document: 3:1 Ninhydrin hydrate ninhydrinhydrate; NIN White crystal or light yellow crystalline powder, easy to absorb moisture and agglomerate, and gradually change color when exposed to light or exposed to air; easily soluble in water and ethanol, slightly soluble in Diethyl ether, chloroform; Melting point (MP): 241°C (decomposition); Molecular formula: C9H4O3 H2O; Relative molecular mass: 178:14 (according to:2016 International Relative Atomic Mass); CASRN: 485-47-2: The structural formula is shown in Figure 1: ......

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