1. Mechanical Measurements Department , Laboratory of Flow and Volume, NQIS/EIM , Thessaloniki , Greece
2. Physics , Federal Institute of Metrology METAS , Bern-Wabern , Switzerland
3. Metrology Department , IPQ , Caparica , Portugal
4. Research Centre in Industrial Engineering, Management and Sustainability , Lusofona University , Caparica , Portugal
5. Department of Medical Technology and Clinical Physics , University Medical Center , Utrecht , Netherlands