(19)

(11)

EP 3 788 208 A1

(12)

(43) Date of publication: 10.03.2021 Bulletin 2021/10 (21) Application number: 19730866.1 (22) Date of filing: 29.04.2019

(51) International Patent Classification (IPC):  E03F 1/00(2006.01) E03F 3/02(2006.01) E03F 3/00(2006.01) E03F 5/10(2006.01) (86) International application number: PCT/GB2019/000065 (87) International publication number: WO 2019/211573 (07.11.2019 Gazette 2019/45)

(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: KH MA MD TN (30) Priority: 30.04.2018 GB 201807013 (71) Applicant: Environmental Monitoring Solutions Limited Sheffield South Yorkshire S4 7UQ (GB)	(72) Inventors: OSTOJIN, Sonja S47UQ, South Yorkshire (GB) SKIPWORTH, Peter S4 7UQ, South Yorkshire (GB) (74) Representative: Gilholm, Stephen Philip  IPheions Intellectual Property Buzzard Office The Hawk Creative Business Park Easingwold, York YO61 3FE Easingwold, York YO61 3FE (GB)