BS 7309:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for mouthpiece assemblies for respiratory protective devices
Hardcopy , PDF
05-13-2002
English
07-31-1990
National foreword
Brief history
Text of EN 142
Specification
Introduction
1. Object and field of application
2. References
3. Definition and description
4. Requirements
5. Testing
6. Marking
7. Instructions for use
Figures
1. Scheme of exhalation valve leakage test box
2. Scheme of test rig for valve leakage using a single
cylinder machine
3. Scheme of test rig for valve leakage using a twin
cylinder breathing machine
National appendix A
National appendix B
Cooperating organizations
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