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RESPIRATORY PROTECTIVE DEVICES - VALVED FILTERING HALF MASKS TO PROTECT AGAINST GASES OR GASES AND PARTICLES - REQUIREMENTS, TESTING, MARKING
Amended by: BS EN 405:2001+A1:2009
Available format(s): Hardcopy, PDF
Language(s): English
Published date: 01-01-2002
Publisher: British Standards Institution
ForewordIntroduction1 Scope2 Normative references3 Terms and definitions4 Description5 Classification 5.1 General 5.2 Types of gas filtering half mask 5.2.1 Valved gas filtering half masks 5.2.2 Valved multi-type gas filtering half masks 5.2.3 Valved combined filtering half masks 5.3 Designs of combined valved filtering half masks 5.4 Classes of valved gas filtering half masks6 Designation7 Requirements 7.1 General 7.2 Nominal values and tolerances 7.3 Visual inspection 7.4 Packaging 7.5 Practical performance 7.6 Leakage 7.7 Filter penetration/capacity 7.7.1 Particle filter penetration 7.7.2 Gas filtering capacity 7.8 Finish of parts 7.9 Inhalation and exhalation valves 7.10 Breathing resistance 7.10.1 General 7.10.2 Inhalation resistance 7.10.3 Exhalation resistance 7.11 Clogging 7.11.1 General 7.11.2 Devices with separable particle filters 7.11.3 Devices with integral or separable particle filters 7.11.4 Exhalation resistance 7.12 Compatibility with skin 7.13 Flammability 7.14 Carbon dioxide content of the inhalation air 7.15 Head harness 7.16 Field of vision 7.17 Demountable parts8 Testing 8.1 General 8.2 Visual inspection 8.3 Conditioning 8.3.1 General 8.3.2 Donning and doffing 8.3.3 Temperature 8.3.4 Mechanical strength 8.4 Practical performance 8.4.1 General 8.4.2 Walking test 8.4.3 Work simulation test 8.5 Inward Leakage 8.5.1 General 8.5.2 Principle 8.5.3 Apparatus 8.5.4 Conditioning and number of test samples 8.5.5 Test subjects 8.5.6 Preparation of samples 8.5.7 Test procedure 8.5.8 Test using sulfur hexafluoride as test agent 8.5.9 Test using sodium chloride as test agent 8.6 Gas filtering capacity 8.7 Flammability 8.8 Carbon dioxide content of the inhalation air 8.9 Breathing resistance 8.10 Strength of attachment exhalation valve housing9 Marking 9.1 Packaging 9.2 Valved gas filtering half mask with separable particle filters 9.2.1 Valved gas filtering half mask 9.2.2 Separable particle filters 9.3 Valved gas filtering half masks with integral filters10 Information supplied by the manufacturerAnnex A (informative) - MarkingAnnex ZA (informative) - Clauses of this European Standard addressing requirements or other provisions of EU DirectivesBibliography
Describes the performance requirements, test methods and marking requirements for valved filtering half masks incorporating either gas or combined filters as respiratory protective devices except for escape purposes.
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