(19)

(11)

EP 0 111 499 A1

(12)

(43) Date of publication: 27.06.1984 Bulletin 1984/26 (21) Application number: 83901547.0 (22) Date of filing: 06.04.1983

(51) International Patent Classification (IPC):  B01D 63/ 02( . ) B01D 67/ 00( . ) (86) International application number: PCT/US1983/000495 (87) International publication number: WO 1984/000015 (05.01.1984 Gazette 1984/01)

(84) Designated Contracting States: BE CH DE FR GB LI SE (30) Priority: 14.06.1982 US 19820387988 (71) Applicant: BAXTER TRAVENOL LABORATORIES, INC. Deerfield, IL 60015 (US)	(72) Inventors: BOGGS, Daniel R. Vernon Hills, IL 60061 (US) McGLOTHLIN, Mark W. Vernon Hills, IL 60061 (US) (74) Representative: MacGregor, Gordon, et al  ERIC POTTER CLARKSON St. Mary's Court St. Mary's Gate Nottingham, NG1 1LE Nottingham, NG1 1LE (GB)