Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

GA/T 819-2023 English PDF

Q: How long will the true-PDF of English version of GA/T 819-2023 be delivered?

Upon your order, we will start to translate GA/T 819-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GA/T 819-2023_English with my colleagues?

Yes. The purchased PDF of GA/T 819-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Q: Should I purchase the latest version GA/T 819-2023?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GA/T 819-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GA/T 819-2023: Forensic sciences - Examination methods for dyes on textile fibers - Thin-layer chromatography and liquid chromatography
Status: Valid

GA/T 819: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GA/T 819-2023	259	Add to Cart	3 days	Forensic sciences - Examination methods for dyes on textile fibers - Thin-layer chromatography and liquid chromatography	Valid
GA/T 819-2009	199	Add to Cart	2 days	Analytical method of acid dyes on the protein fibers	Obsolete

Similar standards

GA/T 424 GA 1210 GA 1051 GA/T 824 GA/T 823.3 GA/T 823.1

Basic data

Standard ID: GA/T 819-2023 (GA/T819-2023)
Description (Translated English): Forensic sciences - Examination methods for dyes on textile fibers - Thin-layer chromatography and liquid chromatography
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 13,149
Date of Issue: 2023-03-01
Date of Implementation: 2023-12-01
Issuing agency(ies): Ministry of Public Security

GA/T 819-2023: Forensic sciences - Examination methods for dyes on textile fibers - Thin-layer chromatography and liquid chromatography

---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.
ICS 13.310 CCSA92 Public safety industry standards of the People's Republic of China Replace GA/T 819-2009, GA/T 820-2009 Forensic Science Dyestuff Testing on Fibers Thin Layer Chromatography and Liquid Chromatography Published on 2023-03-01 Implemented on 2023-12-01 Released by the Ministry of Public Security of the People's Republic of China

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GA/T 819-2009 "Analysis Methods for Acid Dyes on Protein Fibers" and GA/T 820-2009 "Polyester Fibers" "Analysis Methods for Disperse Dyes", compared with GA/T 819-2009 and GA/T 820-2009, except for structural adjustments and editorial modifications In addition, the main technical changes are as follows. ---Changed the scope (see Chapter 1, Chapter 1 of GA/T 819-2009 and GA/T 820-2009); ---Added principles (see Chapter 4); ---Deleted the capillary method for dye extraction on fibers (see GA/T 819-2009 4.2.2 and GA/T 820-2009 4.2.2); ---Added the test tube extraction method of dyes on fibers (see 7.2.1); ---Changed the analysis and presentation of thin layer chromatography results (see 8.4, 6.4 in GA/T 819-2009 and 6.4 in GA/T 820-2009 6.4); ---Added high performance liquid chromatography analysis conditions for dyes on acrylic fibers, nylon fibers and cotton fibers (see 9.1); ---Changed the analysis and presentation of liquid chromatography results (see 9.3, 5.6 in GA/T 819-2009 and 5.6 in GA/T 820-2009 5.6); ---Changed the structural schematic diagram of the micro extractor (see Figure A.1 in Appendix A, Figure 1 in GA/T 819-2009 and GA/T 820- Figure 1 in.2009). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed and submitted by the Physical and Chemical Inspection Sub-Technical Committee of the National Technical Committee for Standardization of Criminal Technology (SAC/TC179/SC4). Return to home. This document was drafted by. China Criminal Police College. The main drafters of this document. Zhao Pengcheng, Wang Jinghan, Li Xinqian, Wang Yan, Lu Yinni, and Li Hongda. The previous versions of the documents replaced by this document are as follows. ---First published in.2009 as GB/T 819-2009 "Analysis Methods for Acid Dyes on Protein Fibers", GB/T 820-2009 "Analysis Methods for Disperse Dyes on Polyester Fibers" is revised and replaces the above two documents. Forensic Science Dyestuff Testing on Fibers Thin Layer Chromatography and Liquid Chromatography

1 Scope

This document describes methods for the thin-layer chromatography and liquid chromatography examination of dyes on textile fibers in the field of forensic science. This document is applicable to the comparative inspection of dyes on polyester fiber, nylon fiber, acrylic fiber, wool fiber, and cotton fiber in the field of forensic science.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 19267.11 Physical and chemical examination of criminal technical trace evidence Part 11.High performance liquid chromatography GA/T 242 Terminology for physical and chemical examination of trace evidence in forensic science

3 Terms and definitions

The terms and definitions defined in GB/T 19267.11 and GA/T 242 apply to this document.

4 Principles

Colored fibers are usually dyed with one or several dye mixtures. Polyester fibers are commonly dyed with disperse dyes, and acrylic fibers are commonly dyed with cationic dyes. For dyeing with ionic dyes, nylon and wool fibers are commonly dyed with acid dyes, and cotton fibers are commonly dyed with direct, reactive, reducing, vulcanized, and ice dyes. outside Fibers with similar visual colors may be dyed with dyes of different components. The dyes can be extracted from the fibers with solvents and passed through a thin layer of color. Spectrometry or liquid chromatography is used to compare and analyze the dye components on the fiber.

5 Reagents and materials

Reagents and materials include. a) N,N-dimethylformamide (C3H7NO, analytical grade); b) Ethyl acetate (C4H8O2, analytical grade); c) Butyl acetate (C6H12O2, analytical grade); d) Pyridine (C5H5N, analytical grade); e) Cyclohexane (C6H12, analytical grade); f) Tetrahydrofuran (C4H8O, analytical grade); g) Butanone (C4H8O, analytical grade); h) Chloroform (CHCl3, analytical grade); i) Methanol (CH4O, analytical grade); j) Ethanol (C2H6O, analytical grade); ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GA/T 819-2023_English be delivered?

Answer: Upon your order, we will start to translate GA/T 819-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GA/T 819-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GA/T 819-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GA/T 819-2023?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GA/T 819-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.