NPL, United Kingdom BAM, Germany CEA, France CMI, Czech Republic PTB, Germany VSL, The Netherlands Oxford PV, United Kingdom Flisom, Switzerland METAS, Switzerland
| CPI, United Kingdom HZB, Germany University of Surrey, United Kingdom Technical University Berlin, Germany The Welding Institute, United Kingdom Aalto University, Finland Horiba France (HF), France Accurion, Germany EMPA, Switzerland |