Disposable Face Mask Nonwoven 3ply 20gsm + 20gsm + 25gsm >95% Filtration
These adult-sized blue consumer-grade medical masks feature 3 layered protection and are 17.5cm x 9.5cm and include ear loops and tie on.
They have a Bacterial Filtration Efficiency (BFE) of >95% through its 3 layers of protection that is made up of a1st layer: PP non-woven fabric, a 2nd layer: filter cloth and a 3rd layer: PP non-woven fabric
So be sure to wear a mask! !! Even if you are exposed to an infected person, wearing a mask can prevent you from inhaling the virus directly from the droplets.
Why wear a mask!
Viruses are transmitted between people, usually when someone is exposed to the secretions of the infected person. The transmission of the virus directly affects the transmission route. The current route of transmission of the new coronavirus is unclear, but past experience has shown that exposure to the body fluid that the infected person coughs or sprays, or shaking hands with the infected person lead to infection. If your hand touches something that the infected person has touched and then touches your own mouth, nose or eyes, it may also infect the virus.
Normally, people have about a litre of fluid in their lungs, which, each time they sneeze, spray like a squeezed water bottle is projected from the body. In vitro, they are divided into more than 40,000 droplets, each containing a large number of viruses and bacteria. Because of the huge thrust in the body, the velocity of these liquids can be as high as 35 m/s, and the propagation distance can reach 3-8 m.
So be sure to wear a mask!!! Even if you are exposed to an infected person, wearing a mask can prevent you from inhaling the virus directly from the droplets.