Jump to content

Why most of us should be wearing N95 masks

Recommended Posts

Great info with pics and diagrams showing why and how they work.


"N95 respirators have long been the best disposable face coverings for protection against airborne viruses, but until recently, they were scarce.

When worn properly, N95s can filter out at least 95 percent of particles in the air, including the virus that causes covid-19. Only pricey air-purifying respirators or hazmat suits offer better protection.

How N95 masks work

N95s come in several shapes and carry a mark from the National Institute for Occupational Safety and Health (NIOSH) to show that they are authentic. Some look like domes, others a bit like duck bills. This flat-fold, three-panel type is popular in hospitals.


It is made of polypropylene fibers that are 1/50th the size of a human hair, blown together in a random web to create an obstacle course for particles.

Air flows in and out of the microscopic spaces between the fibers, allowing the wearer to breathe."

More diagrams of the electrostatic action and explanations for those interested here in he source article:





Edited by RV_
Link to comment
Share on other sites

I really think there should be a different designation for medical N95/KN95 masks than for industrial N95/KN95 masks with exhalation vents. The industrial vented masks obviously don't work properly for COVID protection, yet both types are simply labeled "N95" or "KN95".

Link to comment
Share on other sites

5 minutes ago, Rich&Sylvia said:

The vented KN95 offers superior protection - but probably fails to prevent spread.

The vented masks only provide protection to the wearer, not to those around them. They're only intended to protect the wearer from dust and similar particle exposures, not viral contamination that can be spread by the wearer.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...