Composite membranes for solid phase extractions and reactions

Liquid purification or separation – With means to add treating material – Chromatography

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2101983, 2105021, 210505, B01D 1508

Patent

active

056350600

ABSTRACT:
A solid phase extraction or chromatographic medium comprises a porous nonwoven fibrous matrix comprising at least one of polytetrafluoroethylene and blown microfibers, and sorptive or reactive hydrophobic siliceous molecular sieve particulates enmeshed in said matrix, the ratio of molecular sieves to matrix being in the range of 40:1 to 1:40.

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