| 
 
 
 ARPANSA | 
 
 | 
 AustralianRadiation Protection and Nuclear Safety Agency, Australia
 | 
| 
 
 
 BEV | 
 
 | 
 Bundesamt fürdas Eich- und Vermessungswesen, Austria
 | 
| 
 
 
 BIPM, CCRI | 
 
 | 
 BureauInternational des Poids et Mesures and Consultative
 Committee for Ionizing Radiation, France
 | 
| 
 
 
 ENEA-INMRI | 
 
 | 
 Enteper le Nuove Tecnologie, l´Energia e l´Ambiente, Instituto
 Nazionale di Metrologia delle Radiazioni Ionizzanti, Italy
 | 
| 
 
 
 IAEA | 
 
 | 
 InternationalAtomic Energy Agency
 | 
| 
 
 
 ICRU | 
 
 | 
 InternationalCommission on Radiation Units and Measurements
 | 
| 
 
 
 IEC | 
 
 | 
 InternationalElectrotechnical Commission
 | 
| 
 
 
 ISO | 
 
 | 
 InternationalOrganization for Standardization
 | 
| 
 
 
 BNM-LPRI | 
 
 | 
 Laboratoire national de métrologie et d'essais/G-MED, France | 
| 
 
 
 NIST | 
 
 | 
 NationalInstitute of Standards and Technology, USA
 | 
| 
 
 
 NPL | 
 
 | 
 NationalPhysical Laboratory, Great Britain
 | 
| 
 
 
 NVZA | 
 
 | 
 Nederlandse Vereniging van Ziekenhuisapothekers,The Netherlands
 | 
| 
 
 
 VSL | 
 
 | 
 Dutch metrology institute, The Netherlands | 
| 
 
 
 NRC | 
 
 | 
 National ResearchCouncil, Canada
 | 
| 
 
 
 NRL | 
 
 | 
 NationalRadiation Laboratory, New Zealand
 | 
| 
 
 
 OIML | 
   
 | 
 OrganisationInternationale de Métrologie Légale
 | 
| 
 
 
 PTB | 
 
 | 
 Physikalisch-TechnischenBundesanstalt, Germany
 |