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AssigneeEMD Millipore Corporation
InventorsMikhail Kozlov, Wilson Moya, Gabriel Tkacik
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A method for removing microorganisms from liquid samples and a nanofiber containing liquid filtration medium that simultaneously exhibits high liquid permeability and high microorganism retention. Microorganisms such as bacteria, particularly B. Diminuta, are removed from a liquid by passing the liquid through a porous nanofiber containing filtration medium having a B. Diminuta LRV greater than about 9, and the nanofiber(s) has a diameter from about 10 nm to about 1,000 nm. Another method for removing microorganisms such as bacteria and Mycloplasma, includes passing the liquid through a porous nanofiber containing filtration medium having a microorganism LRV greater than about 8, and the nanofiber(s) has a diameter from about 10 nm to about 1,000 nm. The filtration medium can be in the form of a fibrous electro spun polymeric nanofiber liquid filtration medium mat.
A multilayer porous nanofiber containing filtration medium made by electrospinning a polymer, wherein the filtration medium exhibits full retention of Brevundimonas diminuta by size-based separation as measured in accordance with ASTM F838-83 and a liquid permeability greater than about 1000 LMH/psi, and wherein the porous nanofiber filtration medium comprises a layer comprising electrospun nanofibers having a fiber diameter from about 10 nm to about 1,000 nm and a porosity from about 80% to about 95%.
A method of removing bacteria from a liquid sample comprising the steps of:
Dependencies are inferred from the claim text.