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Filtration Types |
Depending on their performance characteristics, particularly their nominal pore sizes, membranes used in filtration devices are placed in one of four categories; microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) or reverse osmosis (RO). These categories deal mainly with the membrane’s ability to reject or separate various size particles (or molecules).
Due to the barrier surface formed by the rejected material - sometimes referred to as a polarized layer, boundary layer, or gel layer and the “parallel to pore” flow - the filters often reject particles smaller than the nominal opening in the filter media.
Filtration Spectrum
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