BS EN 136:1998

Foreword
Introduction
1 Scope
2 Normative references
3 Definition
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 Resistance to temperature
7.6 Flammability
7.7 Resistance to thermal radiation
7.8 Cleaning and disinfecting
7.9 Finish of parts
7.10 Replaceable components
7.11 Head harness
7.12 Connector
7.13 Speech diaphragm
7.14 Eyepieces/visor
7.15 Inhalation valves and exhalation valves
7.16 Leaktightness
7.17 Compatibility with skin
7.18 Carbon dioxide content of the inhalation air
7.19 Breathing resistance
7.20 Inward leakage
7.21 Field of vision
7.22 Practical performance
8 Testing
8.1 General
8.2 Conditioning
8.3 Visual inspection
8.4 Resistance to temperature
8.5 Flammability
8.6 Resistance to thermal radiation
8.7 Cleaning and disinfecting
8.8 Head harness
8.9 Connector
8.10 Speech diaphragm
8.11 Eyepieces/visor
8.12 Inhalation valves and exhalation valves
8.13 Leaktightness
8.14 Carbon dioxide content of the inhalation air
8.15 Breathing resistance
8.16 Inward leakage
8.17 Field of vision
8.18 Practical performance
9 Marking
10 Information supplied by the manufacturer
Table - Summary of requirements and tests
Annex A (informative) Marking
Annex ZA (informative) Clauses of this European Standard
         addressing essential requirements or other
         provisions of EU Directives

Performance and marking requirements for masks used as part of respiratory equipment.