NBN EN 1827 : 1999 + 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 Materials
    7.5 Flammability
    7.6 Cleaning and disinfecting
    7.7 Filter material
    7.8 Finish of parts
    7.9 Demountable parts
    7.10 Head hardness
    7.11 Connections
    7.12 Exhalation valves
    7.13 Packaging
    7.14 Mass
    7.15 Gas filter capacity
    7.16 Particle filter penetration
    7.17 Clogginh (Optional)
    7.18 Compatibility with skin
    7.19 Carbon dioxide content of inhalation air
    7.20 Breathing resistance without clogging
    7.21 Inward leakage
    7.22 Field of vision
    7.23 Practical performance
8 Testing
    8.1 General
    8.2 Conditioning
    8.3 Visual inspection
    8.4 Flammability
    8.5 Cleaning and disinfecting
    8.6 Exhalation valves (if fitted)
    8.7 Gas filter capacity
    8.8 Particle filter penetration
    8.9 Clogging
    8.10 Carbon dioxide content of inhalation air
    8.11 Breathing resistance
    8.12 Inward leakage
    8.13 Practical performance
9 Marking
    9.1 Packaging
    9.2 Half mask
    9.3 Filters
10 Information 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

Covers test methods, performance requirements and marking requirements for half masks (re-usable) without inhalation valves and with separable filters (designed for a maximum of single shift use) to protect against gases, or gases and particles, or particles only. Does not cover devices designed for the use in circumstances where there is or might be an oxygen deficiency (oxygen less than 17 % by volume) or for escape purposes. Practical and laboratory performance tests are included for the assessment of compliance with the requirements.