SFS, EN, ISO?
Prefixes SFS, EN, ISO etc. identify
the organization which has approved the standard's text. A standard approved in
Finland carries the prefix SFS, one approved by the European Committee for
Standardization (CEN) the prefix EN, and one approved by the International
Organization for Standardization (ISO) the prefix ISO. Prefix SFS-EN indicates
that the same standard is valid both in Finland and in Europe, whereas SFS-ISO
indicates that the standard is valid in Finland and in ISO, but has not yet
been approved by CEN. SFS-EN ISO
indicates that the standard has been approved by all three organizations.
Each country has its own prefix. This indicates that standards SFS-EN ISO 1234 and DIN-EN ISO 1234 are based on the same identical ISO standard that has been approved in Europe and thus in each CEN member country. This correspondence between numbers only applies to the implementation of European and international standards. In different countries, the same number may be associated with different national standards. It is therefore advisable to take the standard's title into account when purchasing them.