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GA/T 1994-2022 English PDF

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US$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GA/T 1994-2022: Forensic sciences - Examination methods for synthetic fibers - Differential scanning calorimetry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GA/T 1994-2022	329	Add to Cart	3 days	Forensic sciences - Examination methods for synthetic fibers - Differential scanning calorimetry	Valid

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Basic data

Standard ID: GA/T 1994-2022 (GA/T1994-2022)
Description (Translated English): Forensic sciences - Examination methods for synthetic fibers - Differential scanning calorimetry
Sector / Industry: Public Security (Police) Industry Standard (Recommended)
Classification of Chinese Standard: A92
Classification of International Standard: 13.310
Word Count Estimation: 14,171
Date of Issue: 2022-06-15
Date of Implementation: 2022-10-01
Issuing agency(ies): Ministry of Public Security
Summary: This standard is applicable to the comparative inspection of the same type of synthetic fibers in the field of forensic science, and can also be used for reference in other fields.

GA/T 1994-2022: Forensic sciences - Examination methods for synthetic fibers - Differential scanning calorimetry

---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 Forensic Science Synthetic Fiber Inspection Differential Scanning Calorimetry Released on 2022-06-15 2022-10-01 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: 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 was proposed by the National Criminal Technology Standardization Technical Committee Physical and Chemical Inspection Sub-Technical Committee (SAC/TC179/SC4) and submitted Focus on: This document was drafted by: Ministry of Public Security Evidence Appraisal Center, China Criminal Police Academy: The main drafters of this document: Sun Zhenwen, Wang Ping, Tao Keming, Zhu Jun, Shi Huixia, Qiao Ting, Zhang Guannan, Hu Can, Wang Yan, Li Xinqian, Li Hongda, Lu Yinni: Forensic Science Synthetic Fiber Inspection Differential Scanning Calorimetry

1 Scope

This document specifies the analytical methods and basic requirements for the examination of synthetic fibers by differential scanning calorimetry (DSC) in the field of forensic science: This document is applicable to the comparison and inspection of the same type of synthetic fibers in the field of forensic science, and can also be used as a reference in other fields:

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/T 6425 thermal analysis terms GB/T 19267:12 Physical and Chemical Examination of Trace Evidence in Criminal Technology Part 12: Thermal Analysis Method GA/T 242 Physicochemical Examination Terminology for Trace Evidence in Forensic Science

3 Terms and Definitions

The terms and definitions defined in GB/T 6425, GB/T 19267:12 and GA/T 242 apply to this document:

4 principles

Under program-controlled temperature and a certain atmosphere, by measuring the heat flow rate or heating power difference between the input sample and the reference substance and the temperature or time The relationship between them can characterize multiple thermodynamic parameters such as enthalpy change and melting point: Synthetic fibers are made of polymer materials by melt spinning, different types Synthetic fibers differ in their thermodynamic parameters: Synthetic fibers produced by different manufacturers have different thermodynamic parameters due to different sources of raw materials and different technological processes: There may be differences, and the thermodynamic parameters of synthetic fibers can be compared and analyzed by DSC:

5 Reagents and materials

5:1 Reagents Reagents include: a) Ethanol (C2H5OH, analytically pure); b) Deionized water: 5:2 Materials Materials include: a) Sample dish (aluminum sample dish, ceramic sample dish or platinum sample dish); b) Reference substance (calcined alumina); ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GA/T 1994-2022_English be delivered?

Answer: Upon your order, we will start to translate GA/T 1994-2022_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 1994-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GA/T 1994-2022_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.