| http://www.w3.org/ns/prov#value | - A system as set forth in claim 1, wherein said hydrophobic organic polymeric membrane comprises:a membrane of a polysiloxane represented by the following general formula: ##STR6## wherein Z1 and Z2 stand for an alkyl or aryl group having 1 to 10 carbon atoms, in which one or more of the carbon atoms may have a halogen or cyano substituent, and n is a number of at least 100. 17.
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