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GB/T 32776-2016: Test method of density for pesticides
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32776-2016 | English | 119 |
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Test method of density for pesticides
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GB/T 32776-2016
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Basic data | Standard ID | GB/T 32776-2016 (GB/T32776-2016) | | Description (Translated English) | Test method of density for pesticides | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G23 | | Classification of International Standard | 65.100 | | Word Count Estimation | 6,691 | | Date of Issue | 2016-06-14 | | Date of Implementation | 2017-01-01 | | Quoted Standard | GB/T 6882-2008 | | 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 proportion of homogeneous liquid pesticide density of the method, the density of the bottle and the determination of the density of the suspension of pesticide dilution hydrometer method, defoaming density bottle method. In this standard, the hydrometer method (3.1) and the density bottle method (3.2) are applicable to the homogeneous liquid pesticide; the dilution hydrometer method (3.3) and the defoaming density bottle method (3.4) are suitable for the suspending agent. | GB/T 32776-2016: Test method of density 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.
Test method of density for pesticides
ICS 65.100
G23
National Standards of People's Republic of China
Method for determination of pesticide density
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.
This standard participates in the drafting unit. Hefei Xingyu Chemical Co., Ltd., Hengshui Jingmei Chemical Industry Co., Ltd., Jiangsu Fengdeng Crop Insurance
Protection Co., Ltd.
The main drafters of this standard. Li Dong, Wang Chuan-yuan, Yan Shengying, Geng Rongwei, Wang Lanlan.
Method for determination of pesticide density
1 Scope
This standard specifies the specific gravity method for the determination of the density of homogeneous liquid pesticides, the density of bottles and the determination of the dilution specificity of the suspension dosage
Method, defoaming density bottle method.
The proportion of the standard method (3.1) and density bottle method (3.2) in this standard is applicable to homogeneous liquid pesticides; dilution hydrometry (3.3) and defoaming density
Law (3.4) applies to suspending agents and so on.
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.
GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696. 1987, MOD)
3 test method
The water used in this standard, when not specified in other requirements, refers to the analysis of pure reagents and GB/T 6682-2008 in the provisions of the three water.
3.1 Proportion method
3.1.1 Methodological Summary
Place the sample at constant temperature and place it at almost the same temperature. Put the appropriate hydrometer into the sample
After the contrast meter readings, as the sample density.
3.1.2 instrument
Hydrometer. accurate to 0.0005g/mL, or equivalent instrument.
Thermostat. temperature can be controlled at 20 ℃ ± 0.5 ℃.
Measuring cylinder. 1000mL (diameter greater than the specific gravity of at least 25mm, so that the hydrometer can be free floating in the sample, and in the container
The bottom and the bottom of the hydrometer at least 25mm space); or meet the space requirements of the cylindrical container.
3.1.3 Measurement steps
At 20 ° C, the liquid test substance is equilibrated with the surrounding temperature and poured into the graduated cylinder. The liquid test object is passed along the edge of the graduated cylinder
Injection, so as not to generate foam. Holding the handle of the hydrometer, slowly into the liquid, the hydrometer can not touch the cylinder wall, when the hydrometer stable
After reading the reading.
3.2 density bottle method
3.2.1 Methodological Summary
The volume of the density bottle was calibrated with water at 20 ° C, and the sample mass was weighed. Finally, the sample density was calculated.
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