Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Description
5 Classification
  5.1 Types of filters
       5.1.1 Gas filters
       5.1.2 Multi-type gas filters
       5.1.3 Combined filters
       5.1.4 Special filters
  5.2 Classes of filters
6 Requirements
  6.1 General
  6.2 Ergonomics
  6.3 Design
  6.4 Materials
  6.5 Mass
  6.6 Connection
  6.7 Multiple filters
  6.8 Packaging
  6.9 Mechanical strength (M.S.)
  6.10 Temperature conditioning (T.C.)
  6.11 Breathing resistance
  6.12 Gas capacity
       6.12.1 General
       6.12.2 Types A, B, E, K, AX and special filters
       6.12.3 Type SX
  6.13 Combined filters
       6.13.1 General
       6.13.2 Filter penetration
  6.14 Clogging (optional)
       6.14.1 General
       6.14.2 Filter penetration
       6.14.3 Breathing resistance
7 Testing
  7.1 General
  7.2 Nominal values and tolerances
  7.3 Visual inspection
  7.4 Mechanical strength (M.S.)
       7.4.1 Test equipment
       7.4.2 Test procedure
  7.5 Temperature conditioning (T.C.)
  7.6 Test flow conditions
       7.6.1 General
       7.6.2 Multiple filters
  7.7 Breathing resistance
  7.8 Gas capacity
       7.8.1 General
       7.8.2 Filters Type A, B, E and K
       7.8.3 Filters Type AX
       7.8.4 Special filters
       7.8.5 Filter Type SX
  7.9 Filter penetration
8 Marking
  8.1 General
  8.2 Filters
  8.3 Filter package
9 Information supplied by the manufacturer
Annex ZA (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives