(19)

(11)

EP 1 242 801 A1

(12)

(43) Date of publication: 25.09.2002 Bulletin 2002/39 (21) Application number: 00979766.3 (22) Date of filing: 28.11.2000

(51) International Patent Classification (IPC)7: G01N 1/34, B01J 20/02 (86) International application number: PCT/GB0004/531 (87) International publication number: WO 0104/0761 (07.06.2001 Gazette 2001/23)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 02.12.1999 GB 9928368 (71) Applicant: AstraZeneca AB 151 85 Södertälje (SE)	(72) Inventor: CORLESS, Anthony Ash, Surrey GU12 6EG (GB) (74) Representative: Phillips, Neil et al AstraZeneca AB,Global Intellectual Property 151 85 Sodertalje 151 85 Sodertalje (SE)