GB/T 14825-2023 English PDF

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GB/T 14825-2023: Determination method of suspensibility for pesticides
Status: Valid

GB/T 14825: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14825-2023	259	Add to Cart	3 days	Determination method of suspensibility for pesticides	Valid
GB/T 14825-2006	319	Add to Cart	3 days	Determination method for suspensibility of pesticides	Obsolete
GB/T 14825-1993	239	Add to Cart	2 days	Determination method of suspensibility of wettable powders for pesticides	Obsolete

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Basic data

Standard ID: GB/T 14825-2023 (GB/T14825-2023)
Description (Translated English): Determination method of suspensibility for pesticides
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G23
Classification of International Standard: 65.100
Word Count Estimation: 13,192
Date of Issue: 2023-09-07
Date of Implementation: 2024-04-01
Older Standard (superseded by this standard): GB/T 14825-2006
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 14825-2023: Determination method of suspensibility for pesticides

---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 65.100 CCSG23 National Standards of People's Republic of China Replace GB/T 14825-2006 Method for determination of pesticide suspension rate Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

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 GB/T 14825-2006 "Method for Determination of Pesticide Suspension Rate". Compared with GB/T 14825-2006, except for structural adjustments In addition to editorial changes, the main technical changes are as follows. ---Increased the suspension concentration range (see 4.2.4.1); ---Changed the test temperature (see 4.2.4.1, 4.1.3 of the.2006 version); ---The calculation formula of the weight method has been changed (see 4.3.5, 4.5.5 of the.2006 version); ---Added standard hard water preparation method for dissolving water-soluble packaging bags (see Appendix B). 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 by China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Pesticide Standardization Technical Committee (SAC/TC133). This document was drafted by. Syngenta (Suzhou) Crop Protection Co., Ltd., Jiangsu Dongbao Agrichemical Co., Ltd., Jiangsu Longdeng Chemical Co., Ltd. Co., Ltd., Hunan Haohua Chemical Co., Ltd., Huizhou Yinnong Technology Co., Ltd., Jiamusi Heilong Pesticide Co., Ltd., Shandong Wei Fangrunfeng Chemical Co., Ltd., Zhejiang Xin'an Chemical Group Co., Ltd., Guangxi Sujing Technology Co., Ltd., Shandong Luba Chemical Co., Ltd. Co., Ltd., Sinochem Chemical Research Institute Co., Ltd., and Shenyang Shenyang Chemical Research Institute Testing Technology Co., Ltd. The main drafters of this document. Li Na, Wang Fujun, Xu Chengchen, Feng Xiuzhen, Ye Shenglong, Cao Saiqiong, Wei Shadi, Xiao Caigen, Tian Maoying, Yao Eryan, Tan Pan, Han Zengrui, Yan Cong, Nan Yan, Li Xiaoyun, Zhang Jiwei, Yang Lin, Xing Hong. The previous versions of the documents replaced by this document are as follows. ---First published as GB/T 14825-1993 in.1993, first revised in.2006; ---This is the second revision. Method for determination of pesticide suspension rate

1 Scope

This document describes the active ingredient method and the gravimetric method for determining the suspension rate of pesticide formulations. This document is applicable to the determination of the suspension rate of pesticide preparations diluted with water to form a suspension.

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 603 Preparation of preparations and products used in chemical reagent test methods

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 standard hard waterD standardwaterD Water with a hardness of 342 mg/L, a molar concentration ratio of calcium and magnesium ions of 4.1, and a pH value of 6.0~7.0. 3.2 water soluble bag water soluble bag Pesticide solid preparation packaging bags made of polymer water-soluble film.

4 Test methods

Warning. Personnel using this document should have practical experience in laboratory work. This document does not address all security issues. user Responsibility for taking appropriate safety and health measures. 4.1 General provisions The reagents and water used in this document refer to analytical grade reagents and deionized water unless other requirements are noted. 4.2 Active ingredient method 4.2.1 Principle Use standard hard water to prepare the suspension of the sample to be tested into a suspension with appropriate mass concentration. Under the specified conditions, let it stand in the measuring cylinder for a certain period of time During the period, remove the upper 9/10 of the suspension, use the active ingredient method to measure the mass of the active ingredients in the bottom 1/10 of the suspension, and calculate the suspension rate. 4.2.2 Reagents and solutions Standard hard water. Standard hard water D (unless otherwise specified), the preparation method is carried out according to the method described in Appendix A. ......

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