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.
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Condensation Breathing Valve
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