Assessor, Consultant and Trainer for WeACT! (2017-)
Freelance consultant in the field of calibration, metrology and accreditation of measuring laboratories (2017 -)
Trainer at Kelvin Training in the field of weighing instruments (NAWI), mass, pressure, force and volume measurement (2017 -)
Metrology employee VSL Dutch Metrology Institute, Delft, the Netherlands (1990 - 2018)
Quality manager VSL Dutch Metrology Institute, Delft, the Netherlands (2014 - 2018)
Member of the Technical Committee Pressure Measurement (TCDM, 1991 -)
Participant of the Mirror group of NEN with regard to the revision of ISO / IEC 17025: 2005 (2016)
Member of the FENELAB Accreditation Committee (2014-2017).
Member of the European Technical Commission for Quality (TC-Q, EURAMET, 2014-2018).
Technical expert / assessor for and at RvA (NL), BELAC (BE) and some other foreign accreditation bodies for calibration laboratories in accordance with ISO / IEC 17025, 1990 -)
Contact Person for EURAMET TC Mass and Derived Quantities (2000-2008).
Member of the CCM Medium Pressure Working Group (2000-2014)
Member of the CCM High Pressure Working Group (2000-2014)
Observer of the CCM Mass standards Working Group and the CCM Force Working Group (2000-2008)
Co-author of various articles on ring comparisons in the field of pressure and mass measurement (1995 - 2018).