Information about pore sizes

Information about pore sizes – what do these indications mean?

Class
Indication
Pore size in μm
Class:

00

Indication:

P 500

Pore size in μm:

250 - 500 *

Class:

0

Indication:

P 250

Pore size in μm:

160 - 250 *

Class:

1

Indication:

P 160

Pore size in μm:

100 - 160 *

Class:

2

Indication:

P 100

Pore size in μm:

40 - 100

Class:

3

Indication:

P 40

Pore size in μm:

16 - 40

Class:

4

Indication:

P 16

Pore size in μm:

10 - 16

Class:

5

Indication:

P 1,6

Pore size in μm:

1 - 1,6

* not feasible with PTFE at the moment

Typical applications – often asked.

Poresize
Application
Poresize:

50 μm

Application:

Filtration of coarse particles, distribution of gas in liquids

Poresize:

5 μm

Application:

Filtration of medium-sized particles, laboratory filtration, valve for packings (gas permeable, leak proof)

Poresize:

1 μm

Application:

Filtration of aqueous solvents, elimination of particles

Poresize:

0,45 μm

Application:

Prefiltration of aqueous solvents, HPLC solvents, protein solvents and alcohols, sterile filtration of air or other gases

Poresize:

0,2 μm

Application:

Ultracleaning of organic solvents and alcohols, sterile filtration of air or other gases

Poresize:

0,05 μm

Application:

Ultracleaning of solvents or gases (virus)

filtration

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