(19)

(11)

EP 0 578 669 A1

(12)

(43) Date of publication: 19.01.1994 Bulletin 1994/03 (21) Application number: 92907175.0 (22) Date of filing: 01.04.1992

(51) International Patent Classification (IPC):  B01L 3/ 00( . ) C12N 1/ 34( . ) G01N 27/ 28( . ) G01N 33/ 66( . ) B01L 11/ 00( . ) C12Q 1/ 00( . ) G01N 33/ 487( . ) (86) International application number: PCT/GB1992/000576 (87) International publication number: WO 1992/017778 (15.10.1992 Gazette 1992/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 05.04.1991 GB 19910007193 (71) Applicant: WILSON, Robert Basingstoke, Hampshire RG21 2UE (GB)	(72) Inventor: WILSON, Robert Basingstoke, Hampshire RG21 2UE (GB) (74) Representative: Parker, Geoffrey  Patents Department British Technology Group Ltd 101 Newington Causeway London SE1 6BU London SE1 6BU (GB)