Abstract: Filter press (100) with a structure comprising: a frame (50); a first fixed shoulder (15) and a first movable shoulder (16), defining a first volume (VI): a second fixed shoulder (17), where said first movable shoulder (16) is arranged between the first and second fixed shoulder (15, 17): first drive means (60) adapted to move the first movable shoulder (16) to vary said first volume (VI), where said filter press (100) further comprises: a second movable shoulder (14), adapted to cooperate with said first fixed shoulder (15) and to define a second volume (V2): a third fixed shoulder (13), where said second movable shoulder (14) is arranged between the first and the third fixed shoulder (15, 13): second drive means (70) adapted to move said second movable shoulder (14) so as to vary said second volume (V2): a manual or automatic control unit (90), adapted to control at least said first drive means (60) and said second drive means (70), and where the first volume (VI) and the second volume (V2) are positioned o

Abstract: A filter for the removal of substance from blood or blood components, particularly for the removal of leukocytes and platelets, comprises a polymeric filter material having a polyurethane coating, wherein the polyurethane has a number average molecular weight not higher than 10,000 Da; the polyurethane is preferably obtained by the addition reaction of an aliphatic diisocyanate, polyethylene glycol and butandiol, by using an excess of the butandiol, whereby the addition reaction is stoichiometrically unbalanced.