NS EN 140 : 2ED 1999

Foreword
Introduction
1 Scope
2 Normative references
3 Definition
4 Description
5 Designation
6 Requirements
    6.1 General
    6.2 Nominal values and tolerances
    6.3 Visual inspection
    6.4 Materials
    6.5 Resistance to temperature
    6.6 Flammability
    6.7 Cleaning and disinfecting
    6.8 Demountable parts
    6.9 Replaceable components
    6.10 Head harness
    6.11 Connector
    6.12 Inhalation valves and exhalation valves
    6.13 Compatibility with skin
    6.14 Carbon dioxide content of inhalation air
    6.15 Breathing resistance
    6.16 Inward leakage
    6.17 Field of vision
    6.18 Practical performance
7 Testing
    7.1 General
    7.2 Conditioning
    7.3 Visual inspection
    7.4 Resistance to temperature
    7.5 Flammability
    7.6 Cleaning and disinfecting
    7.7 Head harness (pull test)
    7.8 Connector
    7.9 Exhalation valve (flow test)
    7.10 Exhalation valve housing (pull test)
    7.11 Carbon dioxide content of inhalation air
    7.12 Breathing resistance
    7.13 Inward leakage
    7.14 Practical performance
8 Marking
    8.1 Facepiece
    8.2 Packaging
9 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

Defines minimum requirements for half masks and quarter masks to be used as part of respiratory protective devices, excluding escape and diving apparatus. Includes laboratory and practical performance tests for assessing compliance with the requirements.