Sterile filters: Difference between revisions
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== Links == | == Links == | ||
* [http://www.millipore.com/techpublications/tech1/vg3561en00 Millex® 33 mm Filter Units with Durapore® PVDF Membrane - description and test] | |||
* [http://www.millipore.com/techpublications/tech1/qa13 Effect of pore size on microbrial recovery - Millipore] | * [http://www.millipore.com/techpublications/tech1/qa13 Effect of pore size on microbrial recovery - Millipore] |
Revision as of 04:21, 25 February 2009
Sterile filters can be used in a forward (syringe>filter>tube) and backward (tube>filter>syringe) direction to remove microorganisms and particles depending on the chosen pore size. Commonly used filters include Millipore's single use Millex filters.
Pore size
- 0.10 µm - 100 nm
- 0.22 µm - 220 nm
- 0.45 µm - 450 nm
Size comparison
- 0.01-0.3 µm - 10-300 nm viruses
- 0.4-0.6 µm - 400-600 nm Lactobacillus brevi/Listeria innocua width [1]
- 0.7-1.2 µm - 700-1200 nm E. coli width [2]
- 4 - 6 µm - 4000-6000 nm S. cerevisiae diameter [3])