(19)

(11)

EP 1 198 702 A1

(12)

(43) Date of publication: 24.04.2002 Bulletin 2002/17 (21) Application number: 00942591.9 (22) Date of filing: 03.07.2000

(51) International Patent Classification (IPC)7: G01N 21/49, G01N 21/61, G08B 17/107 (86) International application number: PCT/NZ0000/118 (87) International publication number: WO 0102/838 (11.01.2001 Gazette 2001/02)

(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: 02.07.1999 NZ 33655299 (71) Applicant: The University of Otago Dunedin (NZ)	(72) Inventor: WILSON, Andrew Dunedin (NZ) (74) Representative: Rackham, Stephen Neil et al GILL JENNINGS & EVERY,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)