Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1995-09-21
1997-09-09
Kim, John
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
210489, 210496, 210506, B01D 2900, B01D 2905
Patent
active
056652330
ABSTRACT:
Disclosed is a filter material for selectively removing leukocytes from a leukocyte-containing suspension, which comprises a porous element having an average pore diameter of 1 to 25 .mu.m and a total pore volume of 0.40 to 0.95 ml/ml of the porous element, and wherein the sum of respective pore volumes of pores of the porous element which have a pore diameter of 1 to 30 .mu.m is 90% or more, based on said total pore volume. Also disclosed is a filter apparatus for selectively removing leukocyte from a leukocyte-containing suspension which is packed with the above-mentioned filter material. By virtue of the filter material, the filter apparatus not only can remove leukocytes from a leukocyte-containing suspension at a leukocyte removal efficiency as excellent as 10.sup.-4 or less in terms of a leukocyte residual ratio without suffering from a pressure loss increase, but also can be rendered compact.
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Fukuda Tatsuya
Nishimura Takao
Yamawaki Naokuni
Asahi Medical Co., Ltd.
Kim John
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