MULTI-COMPARTMENT FILTER AND METHOD OF FILTERING USING SAME

摘要

Each embodiment includes a central sample reservoir (110) and a plurality of satellite reservoirs (120 A-H). In a first embodiment, a first electrode (140) in electrical contact with the central reservoir is charged and second electrodes (150 A-H) in electrical contact with the satellite reservoirs are sequentially charged, thereby pI filtering molecules in the central reservoir into the satellite reservoirs. In a second embodiment, the central reservoir is configured to rotate so that molecules in a sample in the central reservoir are centrifugally pI-filtered into the satellite reservoirs. In a third embodiment, first and second electrodes proximate opposite first and second satellite reservoirs, respectively, are charged. Some molecules in a sample are pI filtered into the first and second satellite reservoirs. Third and fourth electrodes proximate opposite third and fourth satellite reservoirs, respectively, are then charged. Some molecules in a sample are pI filtered into the third and fourth satellite reservoirs.