FILTER MEDIUM FOR SELECTIVELY REMOVING LEUCOCYTES.

摘要

A filter medium for the selective removal of leucocytes from blood, consists of a fibrous material bearing on its surface non-ionic hydrophilic gps. and also basic nitrogen-contg. functional gps. The mean dia. of the fibre is pref. below 10 micro-m (esp. 0.3-3.0 micro-m). The filter medium is pref. composed of a core material surrounded by a surface material in which the basic N-contg. gps. comprise 0.2-4.0 (pref. 0.3-1.5) wt.%.