(19)

(11)

EP 1 779 101 A1

(12)

(43) Date of publication: 02.05.2007 Bulletin 2007/18 (21) Application number: 05768070.4 (22) Date of filing: 26.07.2005

(51) International Patent Classification (IPC):  G01N 27/30(2006.01) C25B 11/12(2006.01) C02F 1/461(2006.01) (86) International application number: PCT/IB2005/002187 (87) International publication number: WO 2006/013430 (09.02.2006 Gazette 2006/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 27.07.2004 GB 0416715 29.09.2004 US 613718 P (71) Applicant: Element Six Limited Ballasalla Isle of Man IM99 6AQ (GB)	(72) Inventors: WORT, Christopher John Howard Wantage, Oxfordshire (GB) SCARSBROOK, Geoffrey Alan Sunninghill, Ascot Berkshire SL5 9TD (GB) YOST, William Joseph, III Twickenham, Middlesex, TW2 6SN (GB) (74) Representative: Goodfellow, Hugh Robin et al Carpmaels & Ransford 43-45 Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)