Tech Team · Kintek Solution

During sieve analysis, taking the right precautions is crucial for obtaining accurate and reliable results.

1. Clean the sieves: Before starting the test, ensure that the sieves are clean and free from any soil particles. This prevents contamination that could affect the accuracy of the analysis.

2. Proper weighing: When weighing the soil sample, place the sieve with the soil sample in a concentric position on the balance. This helps in obtaining accurate measurements.

3. Check sieve shaker: Before conducting the test, check the electric connection of the sieve shaker. This ensures that the shaker is functioning properly and that no soil particles will be pushed through the sieves during the analysis.

4. Visual inspections: Regularly inspect the sieves visually to identify any signs of wear and tear. Look for dents in the mesh and ensure that the mesh is still pulled tightly across the entire surface.

5. Sieve cleaning and maintenance: During the sieving test, gently brush each sieve to recover as much of the retained fraction as possible. This helps in obtaining accurate results. Avoid using one brush for all sieves and use a sieve brush that is stiff enough to clean thoroughly but soft enough to avoid damaging the mesh. Never use any object to "poke" a lodged particle out of the wire mesh, as this can cause damage.

6. Cleaning between uses: Clean the sieves between uses to minimize cross-contamination and prolong the life of finer meshes. Ultrasonic sieve cleaners can be used to clean sieves completely and efficiently.

7. Sieving agitation: Manual agitation, where one person manually shakes the test specimen in one sieve at a time with a pan and cover, may be acceptable for non-critical separations. However, it has poor repeatability and accuracy. Consider using automated sieve shakers for more accurate and repeatable results.

8. Periodic inspections: Periodically inspect the test sieves for damaged wires, distorted openings, and excessive wear. Use magnifiers and special tools for measuring mesh openings to identify any issues.

9. Proper storage: Store test sieves vertically in a proper storage rack to keep them out of the way and less likely to be damaged. Leaving sieves exposed on a benchtop can lead to damage, and dropping a sieve can distort the frame, making it unable to nest with other sieves.

By following these precautions, you can ensure accurate and reliable sieve analysis results and prolong the life of your sieves.

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