SN EN 149 : 2001 + A1 2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Description
5 Classification
6 Designation
7 Requirements
   7.1 General
   7.2 Nominal values and tolerances
   7.3 Visual inspection
   7.4 Packaging
   7.5 Material
   7.6 Cleaning and disinfecting
   7.7 Practical performance
   7.8 Finish of parts
   7.9 Leakage
   7.10 Compatibility with skin
   7.11 Flammability
   7.12 Carbon dioxide content of the inhalation air
   7.13 Head harness
   7.14 Field of vision
   7.15 Exhalation valve(s)
   7.16 Breathing resistance
   7.17 Clogging
   7.18 Demountable parts
8 Testing
   8.1 General
   8.2 Visual inspection
   8.3 Conditioning
   8.4 Practical performance
   8.5 Leakage
   8.6 Flammability
   8.7 Carbon dioxide content of the inhalation air
   8.8 Strength of attachment of exhalation valve housing
   8.9 Breathing resistance
   8.10 Clogging
   8.11 Filter penetration
9 Marking
   9.1 Packaging
   9.2 Particle filtering half mask
10 Information to be supplied by the manufacturer
Annex A (informative) Marking
Annex ZA (informative) Clauses of this European Standard
          addressing essential requirements or other
          provisions of EU directives
Bibliography

Defines minimum requirements for filtering half masks as respiratory protective devices against particles except for escape purposes. Includes laboratory and practical performance tests in order to assess compliance with the requirements.