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Join date: Jan 18, 2022
Posts (5)
Feb 27, 2022 ∙ 1 min
Why can't you use masks with air valves under pandemic
On November 25, 2021, the Centre for Health Protection (CHP) of the Department of Health of the Government of the Hong Kong Special...
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Feb 25, 2022 ∙ 2 min
The importance of Fit test
Respirators, such as N95 and EN149 FFP2 NR, are designed in a three-dimensional figure. Their edges are close to the face to ensure that...
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Feb 25, 2022 ∙ 3 min
Differences between N95 and surgical N95 respirator
As COVID-19 raged for more than two years, vaccination and wearing masks are the most important protection measures against infection. In...
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Dr. Pini
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