Best Face Mask Type to Block Coronavirus Experiment
Scientists at Duke University in Durham, North Carolina, have devised a test for face masks to show which are the best at blocking droplets of fluid and stopping them from spreading.
The team led by Eric Westman found that medical-grade ‘N95’ masks and surgical masks performed extremely well.
Handmade cotton masks also performed well, eliminating a substantial amount of the spray from normal speech.
But improvised face coverings such as bandanas and balaclava-style face coverings were less effective, the researchers found.
The KN95 anti-virus mask refers to a filtration efficiency of greater than 95% for non-oily particles above 0.075 microns.
The diameter of the new coronavirus (pneumonia) virus is about 0.1 to 0.12 microns.
Thus, wearing a KN95 mask can effectively prevent the virus.
Activated carbon protective mask
Material: Mesh / Diving Fabric
24 – 48 Hours Processing
6 – 10 days Korea, Japan, Thailand, United States Delivery
Built-in Filter | 5 layers of protection
Effectively prevent coronavirus infection.
Two-way Bilateral
Condensation Breathing Valve
Condensation fins close tightly during inspiration.
The condensate sheet opens during exhalation.
Reduce moisture condensation and improve comfort.
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E***o –
Hello, good night, the product arrived as agreed, very good.
P***a –
A little small, but they comply … I have others and they are somewhat more comfortable due to their size. Still, good product.
M***d –
very good product as described.
M***e –
beautiful mask. solid and of good material. very satisfied.
P***n –
Great mask, great fit, and reusable, Will reorder. Paul
J***l –
Very fast delivery and exactly the same as advertised. Very satisfied
E***o –
Hello, good morning, the products arrived as agreed, very good masks, show !!!
G***s –
super merci impeccable
E***r –
A very good mask, comfortable to wear even over extended time.
Customer –
Fantastic item.Thank you!
Customer –
will buy back. I like it very much.
M***n –
I take the second time. Very happy. Fast shipment. Quality is super.
S***n –
Delivery is fast enough (13 days from the moment of order and receipt). Packing is very decent-all on individual bags. The masks themselves are made also well-sticking threads, Did not notice holes and other defects. Mask sits comfortable on the face, due to the valves inside not so stuffy, like in ordinary masks and does not sweat the face. In the end, I’m happy with all the points.
Customer –
it is used to Anti COVID-19 Very good I am very satisfied