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BS EN 755-4 also provides users guidance on tolerances on forms
Regulating authorities
Tests are carried out in accordance with this standard unless additional tests (e
including safe opening characteristics and the arrangement of window controls
Respiratory protective devices. List of equivalent terms Ingestion-build-51215 photoprintsWhat is BS EN 135 Respiratory protective devices about? BS EN 135 is a European standard that is applicable to respiratory protective devices. BS EN 135 contains a list of terms that are commonly used in the field of respiratory protection. These terms are listed in the three official CEN languages English, French, and German and appear in the respective alphabetical order. The object of BS EN 135 is to harmonize the terms used in the field of