(19)

(11)

EP 1 730 493 A2

(12)

(43) Date of publication: 13.12.2006 Bulletin 2006/50 (21) Application number: 05718127.3 (22) Date of filing: 15.03.2005

(51) International Patent Classification (IPC):  G01N 21/00(2006.01) (86) International application number: PCT/GB2005/050035 (87) International publication number: WO 2005/088270 (22.09.2005 Gazette 2005/38)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR LV MK YU (30) Priority: 15.03.2004 GB 0405821 13.07.2004 GB 0415634 (71) Applicant: Evanesco Limited Newton Abbot TQ12 4AD (GB)	(72) Inventor: SHAW, Andrew Mark Exeter, Devon EX6 7XJ (GB) (74) Representative: Martin, Philip John  Marks & Clerk 66-68 Hills Road Cambridge, Cambridgeshire, CB2 1LA Cambridge, Cambridgeshire, CB2 1LA (GB)