Descriptors | Breathing apparatus, Respirators, Supplied air breathing apparatus, Escape, Masks (protective clothing), Protective clothing, Performance, Design, Safety devices, Safety measures, Marking, Instructions for use, Mass, Visors, Pressure gauges, Flexible pipes, Valves, Environment (working), Flammability, Tensile strength, Visibility, Classification systems, Flow rates, Compressed air, Performance testing, Type testing, Mechanical testing, Vibration testing, Environmental testing, Cold tests, Thermal testing, Fire tests, Leak tests, Flow measurement, Electrical testing, Electrical resistance, Resistance measurement, Specimen preparation, Test equipment, Testing conditions, Temperature |