(19)

(11)

EP 3 485 245 A1

(12)

(43) Date of publication: 22.05.2019 Bulletin 2019/21 (21) Application number: 17746406.2 (22) Date of filing: 14.07.2017

(51) International Patent Classification (IPC):  G01J 3/28(2006.01) G01J 3/453(2006.01) G01J 3/44(2006.01) G01J 1/44(2006.01) (86) International application number: PCT/EP2017/067901 (87) International publication number: WO 2018/015309 (25.01.2018 Gazette 2018/04)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 18.07.2016 GB 201612392 (71) Applicant: IS-instruments Limited Tonbridge, Kent TN9 1SP (GB)	(72) Inventors: FOSTER, Michael James Tonbridge Kent TN9 1SP (GB) STOREY, Jonathan Tonbridge Kent TN9 1SP (GB) LAPINGTON, Jon Leicester Leicestershire LE1 7RH (GB) (74) Representative: Graham Watt & Co LLP  St. Botolph's House 7-9 St. Botolph's Road Sevenoaks TN13 3AJ Sevenoaks TN13 3AJ (GB)