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Technical information
Information about pore sizes
Information about pore sizes – what do these indications mean?
| Class | Indication | Pore size in μm |
| 00 | P 500 | 250 - 500 * |
| 0 | P 250 | 160 - 250 * |
| 1 | P 160 | 100 - 160 * |
| 2 | P 100 | 40 - 100 |
| 3 | P 40 | 16 - 40 |
| 4 | P 16 | 10 - 16 |
| 5 | P 1,6 | 1 - 1,6 |
* not feasible with PTFEGlossaryPTFE Polytetrafluoroethylene at the moment
Typical applications – often asked.
| Pore-size | Application |
| 50 μm | Filtration of coarse particles, distribution of gas in liquids |
| 5 μm | Filtration of medium-sized particles, laboratory filtration, valve for packings (gas permeable, leak proof) |
| 1 μm | Filtration of aqueous solvents, elimination of particles |
| 0,45 μm | Prefiltration of aqueous solvents, HPLC solvents, protein solvents and alcohols, sterile filtration of air or other gases |
| 0,2 μm | Ultracleaning of organic solvents and alcohols, sterile filtration of air or other gases |
| 0,05 μm | Ultracleaning of solvents or gases (virus) |
