EN 136 is a European standard that specifies the requirements for full face masks used as part of respiratory protective devices. These masks are commonly used in environments where respiratory protection is essential, such as in industrial, chemical, or emergency response settings.
The standard outlines both performance criteria and testing procedures to ensure safety, functionality, and durability. Full face masks are assessed through a combination of laboratory-based tests and practical performance tests on human subjects.
Key areas assessed under EN 136 include:
- Field of vision: Ensuring the mask allows adequate visibility for the wearer.
- Flammability: Testing resistance to fire hazards.
- Strength of connections: Verifying the durability and reliability of attachment points and connectors.
- Breathing resistance: Measuring how easily the wearer can breathe through the mask.
- Carbon dioxide content: Ensuring CO₂ levels within the mask remain within safe limits.
- Inward leakage: Checking for unfiltered air entering the mask.
- Visor/eyepiece performance: Evaluated for mechanical strength, optical clarity (distortion), misting resistance, and leak tightness before and after stress testing.
- Speech diaphragm (if present): Tested for strength and effectiveness in communication.
Additionally, EN 136 requires compliance with specifications regarding:
- Cleaning and disinfecting procedures
- Marking and labelling
- Packaging
- User information and instructions
These criteria ensure that full face masks not only offer protection but are also safe and practical for regular use.
Key points:
- EN 136 sets the standard for full face masks used in respiratory protection.
- Includes both technical performance and usability tests.
- Masks are tested on equipment and human subjects in lab conditions.
- Evaluates visor strength, optical clarity, and leak resistance.
- Ensures masks meet strict safety, hygiene, and information standards.
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