(19)

(11)

EP 1 196 754 A1

(12)

(43) Date of publication: 17.04.2002 Bulletin 2002/16 (21) Application number: 00948128.4 (22) Date of filing: 15.07.2000

(51) International Patent Classification (IPC)7: G01N 1/10, G01N 1/14 (86) International application number: PCT/GB0002/717 (87) International publication number: WO 0106/230 (25.01.2001 Gazette 2001/04)

(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: 15.07.1999 GB 9916648 (71) Applicant: Syngenta Limited Haselmere,Surrey GU27 3JE (GB)	(72) Inventors: AUSTEN, Malcolm, Trayton Middlesex UB3 2AU (GB) SEYMOUR, Mark Warfield,Bracknell,Berks RG42 6LN (GB) (74) Representative: Sharp, Alan Cooper  QED I.P. Services Limited,Dawley Road Hayes,Middlesex UB3 1HH Hayes,Middlesex UB3 1HH (GB)