SN EN 404 : 2005

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Description
5 Classification
6 Requirements
  6.1 General
  6.2 Ergonomics
  6.3 Design
  6.4 Materials
  6.5 Cleaning and disinfecting
  6.6 Mass
  6.7 Connections
  6.8 Means of carrying
  6.9 Harness
  6.10 Handling
  6.11 Leak tightness
  6.12 Facepiece
       6.12.1 Mouthpiece assembly
       6.12.2 Breathing hose
  6.13 Inhalation and exhalation valves
  6.14 Saliva trap
  6.15 Integrity of device at high carbon monoxide concentrations
  6.16 Conditioning
       6.16.1 Mechanical strength
       6.16.2 Rough usage (optional)
       6.16.3 Temperature
       6.16.4 Transport
  6.17 Carbon dioxide content of inhalation air (dead space)
  6.18 Performance requirements
       6.18.1 Minimum test duration
       6.18.2 Carbon monoxide - breakthrough criteria
       6.18.3 Temperature and humidity
       6.18.4 Breathing resistance
  6.19 Practical performance
7 Testing
  7.1 General
  7.2 Nominal values and tolerances
  7.3 Visual Inspection
  7.4 Conditioning
       7.4.1 General
       7.4.2 Mechanical strength test
       7.4.3 Rough usage test
       7.4.4 Temperature conditioning
  7.5 Practical performance test
       7.5.1 Escape test
       7.5.2 Transport test
  7.6 Laboratory test
       7.6.1 Protection against carbon monoxide
       7.6.2 Testing at high CO concentrations
       7.6.3 Breathing resistance
       7.6.4 Leak tightness
       7.6.5 Materials
       7.6.6 Insulation resistance of non-metallic carrying
              containers
       7.6.7 Inhalation and exhalation valves
       7.6.8 Carbon dioxide content of inhalation air
              (dead space)
       7.6.9 Breathing hoses
       7.6.10 Pull test and tear-off force
8 Marking
  8.1 General
9 Information supplied by the manufacturer
Annex A (normative) Methods of measurement of the insulation
                       resistance of non-metallic carrying
                       containers
  A.1 Voltmeter ammeter method
  A.2 Comparative method
Annex B (informative) Method for the determination of wet
                       bulb temperature of the inhaled air
Annex ZA (informative) Relationship between this European
                       Standard and the Essential Requirements
                       of EU Directive 89/686/EEC Personal
                       Protective Equipment

Relates to filtering devices designed for protection against carbon monoxide (filter self-rescuer). Specifies minimum requirements for filter self-rescuers.