(19)

(11)

EP 2 399 125 A1

(12)

(43) Date of publication: 28.12.2011 Bulletin 2011/52 (21) Application number: 10709764.4 (22) Date of filing: 18.02.2010

(51) International Patent Classification (IPC):  G01N 33/00(2006.01) G01N 33/497(2006.01) (86) International application number: PCT/GB2010/050284 (87) International publication number: WO 2010/094967 (26.08.2010 Gazette 2010/34)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 20.02.2009 GB 0902880 (71) Applicant: Bedfont Scientific Ltd Rochester, Kent ME1 3QX (GB)	(72) Inventors: SMITH, Trevor Maidstone Kent ME17 3EZ (GB) LOGAN-SINCLAIR, Ronald Kent ME2 3DD (GB) (74) Representative: Thom, Russell  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)