Liquid purification or separation – Processes – Separating
Patent
1985-03-14
1987-10-20
Fisher, Richard V.
Liquid purification or separation
Processes
Separating
210335, 210491, 210492, 210505, B01D 2702, B01D 3602, B01D 3902
Patent
active
047012676
ABSTRACT:
A filter unit for removing leukocytes from a leukocyte-containing suspension, comprising a container provided with at least one inlet conduit means and at least one outlet conduit means, the container having a main filter packed therein in the form of a non-woven fabric which comprises fibers of an average diameter of from 0.3 .mu.m to less than 3 .mu.m and which has a bulk density of from 0.01 g/cm.sup.3 to 0.7 g/cm.sup.3, and which has an average distance between two adjacent fibers defined by the following equation (1) of from 0.5 .mu.m to 7.0 .mu.m: ##EQU1## wherein y is the average distance between two adjacent fibers in micron; x is the average diameter of fibers in microns; .rho. is the density of the fibers in g/cm.sup.3 ; D is the bulk density of the filter in g/cm.sup.3 ; and .pi. is a circular constant.
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Rikumaru Hiroshi
Watanabe Hiroyuki
Asahi Medical Co., Ltd.
Fisher Richard V.
Jones W. Gary
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