[1] Inst Metrol B&H, Augusta Brauna 2, Sarajevo 71000, Bosnia & Herceg
[2] RISE Matteknik, Res Inst Sweden, Brinellgatan 4, S-50264 Boras, Sweden
[3] Lab Natl Metrol & Essais, 23 Ave Albert Bartholome, F-75015 Paris, France
[4] State Off Metrol, Ibrisimoviceva 11, Zagreb 10000, Croatia
[5] FPS Econ DG Qual & Safety, Metrol Div, Koning Albert II Laan 16, B-1000 Brussels, Belgium
[6] Natl Phys Lab, Hampton Rd, London TW11 0LW, England
[7] Metrol Inst Republ Slovenia, Grudnovo Nabrezje 17, Ljubljana 1000, Slovenia
[8] NSAI Natl Metrol Lab, Griffith Ave Extens,Glasnevin 11 E527, Dublin, Ireland
[9] VSL, Thijsseweg 11, NL-2628 JA Delft, Netherlands
[10] Ulusal Metrol Enstitusu, Gebze Yerleskesi, TR-41470 Gebze, Turkey
[11] Bur Metrol, Blvd Jane Sandanski 109a, Skopje 1000, North Macedonia
[12] Bulgarian Inst Metrol, 52B GM Dimitrov Blvd, Sofia 1040, Bulgaria
[13] Hellen Inst Metrol, Intersect NB6 & DA10 Ind Area Thessaloniki, Block 45, Thessaloniki 57022, TK, Greece
[14] Justervesenet, Fetveien 99, N-2007 Kjeller, Norway
[15] Danish Fundamental Metrol, Matematiktorvet 307, DK-2800 Lyngby, Denmark
[16] VTT Tech Res Ctr Finland Ltd, Ctr Metrol MIKES, Tekniikantie 1, Espoo 02150, Finland
[17] Directorate Measures & Precious Met, Mike Alasa 14, Beograd 11000, Serbia
[18] AS Metrosert, Teaduspargi 8, EE-12618 Tallinn, Estonia
[19] Inst Natl Metrol, Sos Vitan Barzesti 11, Bucharest 042122, Romania
[20] Slovensky Metrol Ustav, Karloveska 63, Bratislava 84255, Slovakia
[21] Inst Portugues Qualidade, Rua Antonio Giao 2, P-2829513 Caparica, Portugal
[22] Bur Int Poids & Mesures, Pavillon Breteuil, F-92312 Sevres, France
[23] Govt Off Capital City Budapest, Nemetvolgyi Ut 37-39, H-1124 Budapest, Hungary
[24] Eidgenoss Inst Metrol, Lindenweg 50, CH-3003 Bern, Switzerland
[25] Latvian Natl Metrol Ctr Ltd, K Valdemara Str 157, LV-1013 Riga, Latvia
[26] Bundesamt Eich & Vermessungswesen, Arltgasse 35, A-1160 Vienna, Austria
[27] Czech Metrol Inst, Okruzni 31, Brno 63800, Czech Republic
[28] Riyadh Al Muhammadiyah King Saud Univ, Saudi Stand Metrol & Qual Org, POB 3437, Riyadh 11471, Saudi Arabia