This European Standard was approved by CEN on 7 November 1999. Amendment A1 was approved CEN/CENELEC on 3 April 2006. Supersedes EN 250:1993. . The European Standard EN 250:2000 + A1 :2006 has status of the Standard of Republic Serbia. 24 p. This European Standard applies to self-contained open-circuit compressed air underwater breathing apparatus and their sub-assemblies.
The object of the requirements and tests set out in this European Standard is to ensure a minimum level of safe operation for apparatus down to a maximum depth of 50 m