(19)

(11)

EP 1 214 590 A1

(12)

(43) Date of publication: 19.06.2002 Bulletin 2002/25 (21) Application number: 00964404.8 (22) Date of filing: 25.09.2000

(51) International Patent Classification (IPC)7: G01N 33/00, G01N 33/34, G01N 1/00, G01N 33/02, G01N 33/14 (86) International application number: PCT/GB0003/664 (87) International publication number: WO 0123/883 (05.04.2001 Gazette 2001/14)

(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: 25.09.1999 GB 9922642 (71) Applicant: Quality Sensor Systems Ltd. Greenfield,Flintshire CH8 7GR (GB)	(72) Inventor: Farrington, Amiel UtkintonTarporley CW6 0XA (GB) (74) Representative: Stuttard, Garry Philip  Urquhart-Dykes & LordTower HouseMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)