Asociación Española de Normalización y Certificación (AENOR)
European Committee for Standardization (CEN)
International Organization for Standardization (ISO)
Canadá: Standards Council of Canada (SCC)
Finland: Finnish Standards Association (SFS)
France: Association française de normalisation (AFNOR)
Germany: Deutsches Institut für Normung (DIN)
Greece: Hellenic Organization for Standarization (ELOT)
Ireland: National Standards Authority of Ireland (NSAI)
Iceland: Icelandic Council for Standardization (STRI)
Italy: Ente Nazionale Italiano di Unificazione (UNI)
Norway: Norges Standardiseringsforbund (NFS)
Portugal: Instituto Português da Qualidade (IPQ)
Sweden: Standardiseringen i Sverige (SIS)
United Kingdom: British Standards Institution (BSI)
USA: American National Standards Institute (ANSI)
USA: American Society for Testing and Materials (ASTM)