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GB/T 22924-2024 English PDF

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Q: Should I purchase the latest version GB/T 22924-2024?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22924-2024 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$219.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22924-2024: Determination of biuret content for compound fertilizers
Status: Valid

GB/T 22924: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22924-2024	219	Add to Cart	3 days	Determination of biuret content for compound fertilizers	Valid
GB/T 22924-2008	130	Add to Cart	Auto, < 3 mins	Determination of biuret content for compound fertilizers (complex fertilizers)	Valid

Similar standards

GB 18382 GB/T 22923 GB/T 19203 GB/T 45891

Basic data

Standard ID: GB/T 22924-2024 (GB/T22924-2024)
Description (Translated English): Determination of biuret content for compound fertilizers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G20
Classification of International Standard: 65.080
Word Count Estimation: 11,190
Date of Issue: 2024-09-29
Date of Implementation: 2025-04-01
Older Standard (superseded by this standard): GB/T 22924-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 22924-2024: Determination of biuret content for compound fertilizers

---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 biuret content for compound fertilizers Determination of Biuret Content in Compound Fertilizers ICS 65.080 CCS G20 National Standard of the People's Republic of China Replaces GB/T 22924-2008 Released on 2024-09-29 2025-04-01 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 22924-2008 "Determination of biuret content in compound fertilizers (compound fertilizers)" and is consistent with GB/T 22924-2008 In comparison, in addition to structural adjustments and editorial changes, the main technical changes are as follows. High performance liquid chromatography was determined as the referee method (see Chapter 4); - Changed the relevant technical content of high performance liquid chromatography (see 5.2, 3.2 of the.2008 edition). - 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 China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Fertilizers and Soil Conditioners (SAC/TC 105). This document was drafted by. Shanghai Chemical Industry Research Institute Testing Co., Ltd., Xinyangfeng Agricultural Science and Technology Co., Ltd., Guizhou Product Quality Inspection Co., Ltd. Testing Institute, Shanghai Chemical Industry Research Institute Co., Ltd., Sinochem Fertilizer Co., Ltd., Shandong Product Quality Inspection Institute. The main drafters of this document are. Huang Heqing, Yang Lei, Zhou Daying, Wang Xinhui, Ma Xinping, Zhang Juan, Huang Fulin, Wang Lu, Yin Jiong, Zhu Hairong, Cheng Huapeng, Zhang Hui, and Gao Luyang. The previous versions of this document and the documents it replaces are as follows. GB/T 22924-2008.- Determination of Biuret Content in Compound Fertilizers WARNING - Personnel using this document should have practical experience in formal laboratory work. This document does not purport to address all possible safety issues. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document describes a method for the determination of biuret content in compound fertilizers by HPLC or spectrophotometry. This document is applicable to the determination of biuret content in compound fertilizers containing urea. It can be implemented as a reference.

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. GB/T 6274 Terminology of fertilizers and soil conditioners GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 8571 Compound fertilizer laboratory sample preparation GB/T 15063 Compound fertilizer

3 Terms and definitions

The terms and definitions defined in GB/T 6274 and GB/T 15063 apply to this document.

4 Method Summary

After ultrasonic extraction of biuret in the sample, the content of biuret was determined by HPLC or spectrophotometry. Chromatography is the referee method.

5 Test methods

5.1 Sample preparation Laboratory samples (commonly known as test specimens) for analysis are prepared according to GB/T 8571. 5.2 Method 1 High Performance Liquid Chromatography 5.2.1 Principle The biuret in the sample was extracted with acetonitrile and water solution (mobile phase) and separated by reversed phase liquid chromatography with amino/aminopropyl column. The content of biuret was quantified and calculated using an ultraviolet detector or a diode array detector. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22924-2024_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22924-2024_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 22924-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22924-2024_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 22924-2024?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22924-2024 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.