(19)

(11)

EP 1 214 139 A2

(12)

(88) Date of publication A3: 09.08.2001 (43) Date of publication: 19.06.2002 Bulletin 2002/25 (21) Application number: 00965123.3 (22) Date of filing: 18.09.2000

(51) International Patent Classification (IPC)7: B01D 61/18 (86) International application number: PCT/US0025/585 (87) International publication number: WO 0119/502 (22.03.2001 Gazette 2001/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 17.09.1999 US 154565 P (71) Applicant: MILLIPORE CORPORATION BedfordMassachusetts 01730 (US)	(72) Inventor: FOLEY, Brian Westford, MA 01886 (US) (74) Representative: Henkel, Feiler, Hänzel  Möhlstrasse 37 81675 München 81675 München (DE)