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GB/T 21121-2024 English PDF

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Q: Should I purchase the latest version GB/T 21121-2024?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21121-2024 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$274.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 21121-2024: Animal and vegetable fats and oils - Determination of oxidative stability(accelerated oxidation test)
Status: Valid

GB/T 21121: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21121-2024	274	Add to Cart	3 days	Animal and vegetable fats and oils - Determination of oxidative stability(accelerated oxidation test)	Valid
GB/T 21121-2007	200	Add to Cart	Auto, < 3 mins	Animal and vegetable fats and oils -- Determination of oxidation stability (accelerated oxidation test)	Valid

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Basic data

Standard ID: GB/T 21121-2024 (GB/T21121-2024)
Description (Translated English): Animal and vegetable fats and oils - Determination of oxidative stability(accelerated oxidation test)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X14
Classification of International Standard: 67.200.10
Word Count Estimation: 14,166
Date of Issue: 2024-11-28
Date of Implementation: 2025-06-01
Older Standard (superseded by this standard): GB/T 21121-2007
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 21121-2024: Animal and vegetable fats and oils - Determination of oxidative stability(accelerated oxidation test)

---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.
Determination of oxidative stability of animal and vegetable fats and oils (Accelerated Oxidation Test) Animal and vegetable fats and oils- Determination of oxidative stability（accelerated oxidation test） (ISO 6886.2016, IDT) ICS 67.200.10 CCS X 14 National Standard of the People's Republic of China Replace GB/T 21121-2007 Released on 2024-11-28 2025-06-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

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 is required. This document replaces GB/T 21121-2007 "Determination of oxidative stability of animal and vegetable fats and oils (accelerated oxidation test)" and is consistent with Compared with GB/T 21121-2007, in addition to structural adjustments and editorial changes, the main technical changes are as follows. Added inapplicable content to the scope (see Chapter 1). - This document is equivalent to ISO 6886.2016 "Determination of oxidative stability of animal and vegetable fats and oils (accelerated oxidation test)". The following minimal editorial changes were made to this document. The formulas are numbered. - Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the State Administration of Grain and Material Reserves. This document is under the jurisdiction of the National Technical Committee on Standardization of Cereals and Oils (SAC/TC 270). This document was drafted by. National Grain and Material Reserves Administration Scientific Research Institute, Nanjing University of Finance and Economics, National Grain and Material Reserves Administration Standards Quality Center, COFCO Donghai Grain and Oil Industry (Zhangjiagang) Co., Ltd., Cargill Grain and Oil (Nantong) Co., Ltd., Wilmar (Shanghai) Biotechnology Technology Research and Development Center Co., Ltd., Standard Foods (China) Co., Ltd., Louis Dreyfus (Tianjin) Food Technology Co., Ltd., Sinograin Oils and Fats (Tianjin) Co., Ltd., COFCO Engineering (Xi'an) International Engineering Co., Ltd., Shandong Xingquan Oils and Fats Co., Ltd., Yunnan Dianxue Grain and Oils Co., Ltd., Feixian COFCO Oils & Fats Industry Co., Ltd., and Rizhao Quality Inspection and Testing Institute. The main drafters of this document are. Li Xiujuan, Xue Yalin, Yuan Qiang, Guo Mimi, Yuan Jian, Li Wanping, Lu Jinhua, Li Yanyan, Chi Huazhong, Zhang Fuyan, Zeng Hua, Zhang Xiaoyong, Li Zisong, Liu Andi, Liu Peilian, Li Mengxiao, Yang Kaizhou, Chai Chengliang, and Xing Changrui. The previous versions of this document and the documents it replaces are as follows. First published in.2007 as GB/T 21121-2007; - This is the first revision. - Determination of oxidative stability of animal and vegetable fats and oils (Accelerated Oxidation Test)

1 Scope

This document describes a method for determining the oxidative stability of animal and vegetable fats and oils subjected to rapid oxidation induced by extreme conditions of high temperature and high air flow. This document applies to the determination of the oxidative stability of unrefined and refined animal and vegetable fats and oils, and does not apply to milk and dairy products (or products derived from milk and dairy products). Determination of oxidative stability of fats and oils of dairy products. This document is not applicable to the determination of the oxidative stability of animal and vegetable fats at room temperature, but is used to compare the effect of adding antioxidants to animal and vegetable fats. Effect. Note. The presence of volatile fatty acids and volatile acidic oxidation products affects the accuracy of the measurement results.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. ISO 661 Animal and vegetable fats and oils-Preparation of test samples sample） Note. GB/T 15687-2008 Preparation of animal and vegetable fat samples (ISO 661.2003, IDT)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Induction period The time from the start of the measurement to the time when the formation of oxidation products begins to increase rapidly. 3.2 Oxidative stability The induction period is expressed in hours (h) measured according to the procedure specified in this document. Note. The temperature usually used in the determination of oxidation stability is 100 ℃ ~ 120 ℃. According to the oxidation stability of the sample being tested, or when it is necessary to extrapolate by regression method When the temperature is increased or decreased by 10 °C, the induction period will increase by about 2 times. The coefficient of variation decreases or increases. 3.3 Conductivity The ability of a substance to conduct electricity.

4 Principle

The purified air is passed into the sample which has been heated to the specified temperature. The gas released during the oxidation process is mixed with the air and then introduced into the long-necked The bottle is pre-filled with deionized water or distilled water and an electrode for measuring conductivity, and the electrode is connected to a measuring and recording instrument. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 21121-2024_English be delivered?

Answer: Upon your order, we will start to translate GB/T 21121-2024_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 21121-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 21121-2024_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 GB/T 21121-2024?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21121-2024 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.