GB/T 33031-2016 in English
SUPERSEDEDTest method of attrition resistance for water dispersible granules
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 33031-2016农药水分散粒剂耐磨性测定方法》由TC133（全国农药标准化技术委员会）归口，主管部门为农业农村部。
Introduction
1. Standard Overview
GB/T33031-2016 "Test Method for Abrasion Resistance of Pesticide Water-Dispersible Granules" specifies the test method for testing the abrasion resistance of pesticide water-dispersible granules, which is applicable to the quality inspection of this type of products.
2. Test Principle
By simulating the wear conditions in actual use, the durability of the product in a specific environment is evaluated. The specific steps include sample screening, weighing, vibration treatment and final quality analysis.
3. Key instruments and equipment
| Instrument name | Specifications | Functional description |
|---|---|---|
| Rotating device | At least two rotating wheels, with a speed range of 75r/min~125r/min | Used to simulate the wear process of samples in actual applications |
| Small vibrating screen | Tray diameter not less than 20cm, vibration frequency 300r/min~500r/min | Used for preliminary screening and subsequent processing of samples |
| Test sieve | 125μm, with cover and receiving tray | Used to separate sample particles of different particle sizes |
4. Detailed explanation of measurement steps
Case study: Taking the actual measurement as an example, assuming that the sampling amount is 60g, 50g of sample is obtained after screening. During the test, the sample runs 4500 revolutions on the rotating device, and the mass m2 left on the sieve is weighed. The wear resistance is calculated by the formula ω=(m2/m1)×100%.
5. Implementation Suggestions
In practical applications, it is recommended that:
- The instrument should be calibrated regularly to ensure test accuracy;
- Operators should receive professional training;
- Maintain the stability of the laboratory environment;
- Record and save all data according to standard requirements.
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