Mesh Sizes vs. Particle Diameters
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A strainer with a cleanable screen can in general retain particles larger than 45 μm (325 mesh). Smaller particles must be retained in a filter. Mesh size vs. particle diameters for strainers and filters are indicated below.
- 1 μm = 10-6 m = 1 micron
Strainer
| Mesh Size | Particle Diameter (μm) |
|---|---|
| 4 | 5205 |
| 8 | 2487 |
| 10 | 1923 |
| 14 | 1307 |
| 18 | 1000 |
| 20 | 840 |
| 25 | 710 |
| 30 | 590 |
| 35 | 500 |
| 40 | 420 |
| 45 | 350 |
| 50 | 297 |
| 60 | 250 |
| 70 | 210 |
| 80 | 177 |
| 100 | 149 |
| 120 | 125 |
| 140 | 105 |
| 170 | 88 |
| 200 | 74 |
| 230 | 62 |
| 270 | 53 |
Filter
| Mesh Size | Particle Diameter (μm) |
|---|---|
| 325 | 44 |
| 400 | 37 |
| 550 | 25 |
| 800 | 15 |
| 1250 | 10 |
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