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GB/T 32775-2016: Testing method of dispersibility for pesticides
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32775-2016 | English | 109 |
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Testing method of dispersibility for pesticides
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GB/T 32775-2016
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Basic data | Standard ID | GB/T 32775-2016 (GB/T32775-2016) | | Description (Translated English) | Testing method of dispersibility for pesticides | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G23 | | Classification of International Standard | 65.100 | | Word Count Estimation | 5,569 | | Date of Issue | 2016-06-14 | | Date of Implementation | 2017-01-01 | | Quoted Standard | GB/T 14825 | | Regulation (derived from) | National Standard Announcement No. 8 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the determination of pesticide dispersibility. This standard is applicable to the determination of dispersibility of water dispersible granules pesticides. | GB/T 32775-2016: Testing method of dispersibility 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.
Testing method of dispersibility for pesticides
ICS 65.100
G23
National Standards of People's Republic of China
Determination of pesticide dispersibility
2016-06-14 release
2017-01-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is nationalized by the National Pesticide Standardization Technical Committee (SAC/TC133).
This standard is responsible for drafting units. Shenyang Chemical Industry Research Institute Co., Ltd.
The standard to participate in the drafting unit. Hefei long easy Agricultural Development Co., Ltd., Shenzhen Connaught letter letter Agricultural Co., Ltd., Shandong Weifang Runfeng
Chemical Co., Ltd., Hengshui North Pesticide Chemical Co., Ltd., Shandong billion Jia Agricultural Chemical Co., Ltd., Jiangsu Fengdeng Crop Protection Co., Ltd. Limited
the company.
The main drafters of this standard. Li Dong, Duan Liangju, Wen Qin, Tang Lili, Xu Shengli, Li Yun, Geng Rongwei.
Determination of pesticide dispersibility
1 Scope
This standard specifies the determination of pesticide dispersibility.
This standard is applicable to the determination of the dispersibility of pesticides in water dispersible granules.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Method for determination of pesticide suspensions in GB/T
3 test method
3.1 Method Summary
A certain amount of water dispersible granules are added to the prescribed water, stirred and mixed to prepare a suspension, and after standing for a period of time, the top 9/10
, The bottom 1/10 suspension and the precipitate were dried and measured by gravimetric method.
This method is equivalent to a simplified suspension rate determination method used to determine the dispersion of water dispersible granules in water.
3.2 Reagents and solutions
Standard hard water. ρ (Ca2 Mg2) = 342mg/L, pH = 6.0 ~ 7.0, according to GB/T 14825 preparation.
3.3 Instruments
Beaker. 1000 mL, inner diameter (102 ± 2) mm.
Electric mixer. can control the speed of 0 ~ 1000r/min.
Stainless steel stir bar. A propeller stir bar with 4 fixed stirring blades with an angle of 45 ° between the blades.
Rotary vacuum evaporator.
Stopwatch.
Electronic balance. the amount of 0.1g, load 1000g.
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