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(11)

EP 0 990 050 A1

(12)

(43) Date of publication: 05.04.2000 Bulletin 2000/14 (21) Application number: 98939776.5 (22) Date of filing: 21.08.1998

(51) International Patent Classification (IPC)7: C12Q 1/68, G01N 27/02, G01N 33/487 (86) International application number: PCT/GB9802/516 (87) International publication number: WO 9910/530 (04.03.1999 Gazette 1999/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 22.08.1997 GB 9717932 (71) Applicant: Molecular Sensors Limited Bradford-upon-Avon,Wiltshire BA15 1YP (GB)	(72) Inventors: COBB, Benjamin, David Bradford on AvonWiltshire BA15 1YP (GB) CLARKSON, John, Michael Bradford on AvonWiltshire BA15 1YP (GB) (74) Representative: Jehan, Robert et al Williams, Powell & Associates,4 St Paul's Churchyard London EC4M 8AY London EC4M 8AY (GB)