(19)

(11)

EP 0 634 011 A1

(12)

(43) Date of publication: 18.01.1995 Bulletin 1995/03 (21) Application number: 94909486.0 (22) Date of filing: 24.01.1994

(51) International Patent Classification (IPC):  G01N 30/ 02( . ) G01N 30/ 64( . ) G01N 30/ 84( . ) G01N 30/ 60( . ) G01N 27/ 02( . ) G01N 30/ 78( . ) G01N 30/ 96( . ) (86) International application number: PCT/US1994/000854 (87) International publication number: WO 1994/018555 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 02.02.1993 US 19930012536 (71) Applicant: DIONEX CORPORATION Sunnyvale California 94086 (US)	(72) Inventor: DASGUPTA, Purnendu, K. Lubbock, TX 79410-2020 (US) (74) Representative: Allard, Susan Joyce, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)