5.1.1 Mask selection

 

5.1.1.1 Surgical Masks  vs N95 Respirators

5.1.1.2 Standard N95 Respirators vs Surgical N95 Masks

• Larger particles: captured by filter fibers directly when they impact or intercept the fibers
• Smaller particles: constantly bombarded by air molecules, causing them to deviate from the air stream and come into contact with a fiber
• Oppositely charged particles: attracted to charged fiber 

* All particles that come into contact with a fiber will stay attached to the fiber firmly, thus filters can capture particles smaller than the pore size.

5.1.3 How to Wear and Take-off Surgical Masks Properly?