(19)

(11)

EP 0 616 555 A1

(12)

(43) Date of publication: 28.09.1994 Bulletin 1994/39 (21) Application number: 93923202.0 (22) Date of filing: 04.10.1993

(51) International Patent Classification (IPC):  G01N 33/ 543( . ) B01L 9/ 00( . ) B01L 3/ 00( . ) (86) International application number: PCT/US1993/009395 (87) International publication number: WO 1994/008716 (28.04.1994 Gazette 1994/10)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 09.10.1992 US 19920959207 (71) Applicant: BAXTER DIAGNOSTICS INC. Deerfield, IL 60015 (US)	(72) Inventors: HUNTLEY, Brent Folsom, CA 95630 (US) WOODING, Michael Fair Oaks, CA 95628 (US) GODSEY, James Folsom, CA 95630 (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)