| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter cartridge which may be relatively inexpensively manufactured, has a membrane support of a structure capable of easily remedying the degradation in the flow rate characteristics of the filter cartridge, is relatively inexpensive and has excellent flow rate characteristics. SOLUTION: Microporous membranes formed with many fine grooves and/or projecting parts are used as the membrane supports of the pleat type filter cartridge for precision filtration composed of at least one sheet of microporous filtration membrane, at least the two membrane supports, a core, an outer peripheral cover and two end plates.
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