NEN EN 13274-7 : 2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Pre-requisites
5 General test requirements
6 Sodium chloride test method
  6.1 Principle
  6.2 Test equipment
  6.3 Test conditions
  6.4 Procedure
  6.5 Calculation of the penetration
7 Paraffin oil test method
  7.1 Principle
  7.2 Test equipment
  7.3 Test conditions at filter
  7.4 Procedure
  7.5 Calculation of the penetration
Annex A (normative) Test results - Uncertainty of measurements
Annex ZA (informative) Clauses of this European Standard
          addressing essential requirements or other
          provisions of EU Directives

States the procedure for testing particle filter penetration for respiratory protective devices.