NS EN 13949 : 1ED 2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Requirements
  4.1 General
  4.2 Materials and design
      4.2.1 Oxygen compatibility
      4.2.2 Oxygen cleanliness
  4.3 Pressure vessel(s)
  4.4 Pressure vessel valve(s)
  4.5 High pressure gauge hose
5 Testing
  5.1 General
  5.2 Oxygen pressure surge test
6 Marking
7 Information supplied by the manufacturer
Annex ZA (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives

Applies to self-contained open-circuit compressed Nitrox gas (oxygen content greater than 22 %) or oxygen underwater breathing apparatus (Nitrox-SCUBA).