NBN EN 14387+A1:2008

This European Standard refers to gas filters and combined filters for use as components in unassisted respiratory protective devices.
Filters for use against CO are excluded from this standard.
Laboratory tests are included for the assessment of compliance with the requirements.
Some filters complying with this standard can also be suitable for use with assisted respiratory protective devices and if so they need to be tested be tested and marked according to the appropriate European Standard.