When comparing mesh sizes, the key factor to understand is that the higher the mesh number, the finer the particles. In this case, a 100 mesh screen has smaller openings than a 40 mesh screen, meaning it captures finer particles. Specifically, particles smaller than 40 mesh (420 microns) but larger than 100 mesh (149 microns) will pass through the 40 mesh screen but be trapped by the 100 mesh screen. This indicates that 100 mesh is finer than 40 mesh.
Key Points Explained:
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Understanding Mesh Sizes:
- Mesh size refers to the number of openings per linear inch in a screen. The higher the mesh number, the smaller the openings and the finer the particles it can capture. For example, a 100 mesh screen has 100 openings per inch, while a 40 mesh screen has 40 openings per inch.
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Particle Size Comparison:
- A 40 mesh screen corresponds to a particle size of approximately 420 microns, meaning particles larger than 420 microns will be trapped by this screen.
- A 100 mesh screen corresponds to a particle size of approximately 149 microns, meaning particles larger than 149 microns will be trapped by this screen.
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Finer Mesh Explanation:
- Since the 100 mesh screen has smaller openings, it captures finer particles compared to the 40 mesh screen. Particles smaller than 420 microns but larger than 149 microns will pass through the 40 mesh screen but be trapped by the 100 mesh screen.
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Practical Implications:
- In applications where particle size is critical, such as in powder processing or filtration, choosing the correct mesh size is essential. For finer particles, a higher mesh number like 100 mesh is used, while a lower mesh number like 40 mesh is suitable for coarser particles.
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Conclusion:
- Based on the particle sizes and mesh sizes, 100 mesh is finer than 40 mesh. This is because the 100 mesh screen captures smaller particles (149 microns) compared to the 40 mesh screen (420 microns).
Summary Table:
| Mesh Size | Openings per Inch | Particle Size (Microns) | Key Feature |
|---|---|---|---|
| 40 Mesh | 40 | 420 | Coarser particles |
| 100 Mesh | 100 | 149 | Finer particles |
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