Questions tagged [face-mask-respirator]

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What happens to a disposable FFP2/N95 respirator during the prolonged use?

Background The area I live in has a regulation that people should wear PPE when visiting grocery stores, etc. There is a shortage of PPE. I have access to some non-reusable FFP2-class respirators that ...
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39 views

How effective are reused surgical masks?

Let's say I have used a surgical mask multiple times. And say I left it on a safe place, untouched, for three days which is the longest that viable SARS-CoV-2 has been found on different materials (...
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Effects of n95 respirator in-flight - from the point of view of ambient oxygen level

I have a generic question about the usage of n95/99 or higher filtration respirators in high-altitude flights. With current pandemic situation we see many government/airlines are enforcing the use of ...
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Do medical/surgical masks [consistently] reduce O2 levels in some settings?

In the circles that decry mask "totalitarianism" and its dangers, much has been made about a 2008 Turkish study of Beder et al.: Repeated measures, longitudinal and prospective ...
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Strategies to conserve filters

If using reusable elastomeric respirators with dual filters (e.g. 3M 6200, 7502, or 6800) in medical settings with potential contact with Covid positive people, in order to conserve the limited number ...
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Is anyone (institution, city, country, individual ...) testing the usage of salt coated repiratory masks?

I'm referring to an article published in Nature: Universal and reusable virus deactivation system for respiratory protection. It has had some media coverage over the past few months, e.g. https://www....