| Austria | ÖN |
| Belgium | IBN/BIN |
| Cyprus | CYS |
| Czech Republic | CSNI |
| Denmark | DS |
| Estonia | EVS |
| Finland | SFS |
| France | AFNOR |
| Germany | DIN |
| Greece | ELOT |
| Hungary | MSZT |
| Iceland | STRI |
| Ireland | NSAI |
| Italy | UNI |
| Latvia | LVS |
| Lithuania | LST |
| Luxembourg | SEE |
| Malta | MSA |
| The Netherlands | NEN |
| Norway | NSF |
| Poland | PKN |
| Portugal | IPQ |
| Slovakia | SUTN |
| Slovenia | SMIS |
| Spain | AENOR |
| Sweden | SIS |
| Switzerland | SNV |
| United Kingdom | BSI |
| Albania | DPS |
| Bulgaria | SASM |
| Croatia | DZNM |
| Romania | ASRO |
| Turkey | TSE |