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GB/T 41939-2022 English PDF

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US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41939-2022: Rubber - Determination of magnesium content by atomic absorption spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41939-2022	279	Add to Cart	3 days	Rubber - Determination of magnesium content by atomic absorption spectrometry	Valid

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Basic data

Standard ID: GB/T 41939-2022 (GB/T41939-2022)
Description (Translated English): Rubber - Determination of magnesium content by atomic absorption spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G40
Classification of International Standard: 83.060
Word Count Estimation: 14,122
Date of Issue: 2022-12-30
Date of Implementation: 2023-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41939-2022: Rubber - Determination of magnesium content by atomic absorption spectrometry

---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 83.060 CCSG40 National Standards of People's Republic of China Determination of Magnesium Content in Rubber - Atomic Absorption Spectrometry Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

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 modified to adopt ISO 6101-6.2018 "Determination of Metal Content by Atomic Absorption Spectrometry in Rubber - Part 6.Determination of Magnesium Content Determination". The technical differences between this document and ISO 16101-6.2018 and their reasons are as follows. --- For standard use, "this document is applicable to the magnesium content in natural concentrated latex, natural rubber and natural rubber products" has been added to the scope determination"; --- In order to improve the use of documents, the sampling method of natural rubber products has been added (see Chapter 7); --- To harmonize the use of documents, the normative reference document ISO 4661-2 (see Chapter 7) for sampling methods of natural rubber products has been added. The following editorial changes have been made to this document. --- In order to coordinate with the existing documents, change the name of the document to "Determination of Magnesium Content in Rubber by Atomic Absorption Spectrometry"; --- For context consistency and coordination, the text structure of "Preparation of samples" has been adjusted (see 8.1.1 and 8.1.3). 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 by China Petroleum and Chemical Industry Federation. This document is sponsored by the General Test Method Subcommittee of National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35/SC2) Focus on. This document is drafted by. Triangle Tire Co., Ltd., Xishuangbanna Quality and Technical Supervision Comprehensive Inspection Center, Shandong Linglong Tire Co., Ltd., Guangzhou Institute of Synthetic Materials Co., Ltd., Beijing Institute of Science and Technology Analysis and Testing Institute (Beijing Institute of Physics and Chemistry Analysis and Testing Center), Sailun Group Co., Ltd., Double Star Group Co., Ltd., Guizhou Tire Co., Ltd., Double Coin Group Shanghai Tire Research Institute Co., Ltd., Beijing Rubber Institute Rubber Tire Testing Technology Service Co., Ltd., Beijing Rubber Industry Research and Design Institute Co., Ltd. The main drafters of this document. Ma Xiuju, Xu Qiuhuan, Zeng Tao, Yang Guihua, Zhang Lijie, Jia Airui, Qi Jingjing, Luo Yuxin, Hu Guanghui, Zhao Ting, Liu Yanyan, Guo Fei, Zhang Hong, Feng Ping, Kuang Chunfu, Dong Wenwu, Cang Feifei, Cui Chunli, Ding Xiaoying, Wang Na. Determination of Magnesium Content in Rubber - Atomic Absorption Spectrometry Warning 1 --- Personnel using this document need to have practical experience in formal laboratory work. This document does not identify all possible security In case of safety issues, the user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in the relevant national laws and regulations. Warning 2 --- The procedures specified in this document may involve the use or generation of some substances, or may generate some wastes. this It may cause local environmental hazards, and it is necessary to refer to the corresponding documents for safe handling and disposal after use.

1 Scope

This document specifies a method for the determination of magnesium in natural latex concentrate, natural rubber and natural rubber products using atomic absorption spectrometry. This document applies to the determination of magnesium content in natural latex concentrate, natural rubber and natural rubber products.

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. ISO 123 Rubber latex sampling (Rubberlatex-Sampling) Note. GB/T 8290-2021 latex sampling (ISO 123.2001, MOD) Note. GB/T 8298-2017 Determination of total solid content of latex (ISO 124.2014, MOD) ISO 247-1 Determination of rubber ash content Part 1.Combustion method (Rubber-Determinationofash-Part 1.Com- bustionmethod) Note. GB/T 4498.1-2013 Determination of Rubber Ash Content Part 1.Muffle Furnace Method (ISO 247.2006, MOD) Note. GB/T 12807-2021 Laboratory Glass Instruments Graduated Pipettes (ISO 835.2007, NEQ) Note. GB/T 12806-2011 Laboratory Glass Instruments Single Marked Line Volumetric Flasks (ISO 1042.1998, NEQ) Note. GB/T 15340-2008 Natural and synthetic raw rubber sampling and sample preparation method (ISO 1795.2000, IDT) ISO 4661-2 Preparation of vulcanized rubber or thermoplastic rubber chemical test samples and test specimens (Rubber, vulcanizedorther- Note. Preparation of GB/T 17783-2019 Vulcanized Rubber or Thermoplastic Rubber Chemical Test Samples and Test Specimens (ISO 4661-2.2018, MOD)

3 Terms and Definitions

This document does not have terms and definitions that need to be defined. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41939-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41939-2022_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 GB/T 41939-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41939-2022_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.