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Nirvana Being’s Airific N95 Anti-Viral Mask are certified to filter out particles as small as 100 nanometers (0.1 micron). COVID particles, are around 0.125 microns or 125 nanometers. These masks don’t have a valve, something that recently caused panic among authorities.
from Top Tech News- News18.com https://ift.tt/2BPGXp4
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