| http://www.w3.org/ns/prov#value | - In another embodiment, the membrane is a polymeric membrane, and may be selected from the group including cellulose, cellulose acetates, cellulose nitrate, polyethylene, polypropylene, nylons and other polyamides, polyesters, polycarbonates, polyvinylidene difluoride, polytetrafluoroethylene, polysulfones, polyethersulfones, polyacrylonitriles, and mixtures thereof.
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