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EP 4 680 943 A1

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(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24773678.8 (22) Date of filing: 18.03.2024

(51) International Patent Classification (IPC):  G01N 21/77(2006.01) G01N 21/33(2006.01) G01N 31/22(2006.01) G01N 21/31(2006.01) G01N 21/85(2006.01) G01N 33/24(2006.01) (52) Cooperative Patent Classification (CPC): G01N 21/85; G01N 21/33; G01N 33/245; G01N 2021/855 (86) International application number: PCT/AU2024/050239 (87) International publication number: WO 2024/192464 (26.09.2024 Gazette 2024/39)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 17.03.2023 AU 2023900739 (71) Applicant: Sentek Pty Ltd. Stepney S.A. 5069 (AU)	(72) Inventors: DALTON, Michael Reginald Greenwith, South Australia 5125 (AU) PORTMANN, Michael Robert Pasadena, South Australia 5042 (AU) BUSS, Peter Woodforde, South Australia 5072 (AU) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)