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A PAPR (powered air purifying respirator) forces air through a filter into a sealed mask to protect workers; here’s a DIY version designed by physician Randell Vallero MD using a 5V computer fan, HEPA…
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As I've learned more about the risk of high pressure care, it's definitely not for the faint of heart and can continue as an engineering thread.
I wanted share a much lower risk, less controversial…
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Where may I purchase a dozen facebit devices?
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貼吧活動：(請查閱 [SARS-CoV-2 Timeline by 2020.02.21](https://github.com/agorahub/_meta/blob/agoran/theagora/sari/Memorandum_2020-02-21_SARS-CoV-2-Timeline_Nathan.pdf?raw=true), by Nathan :cloud: )
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# Universal Citizen Protection Device
## Description
The UCPD is a reusable, reliable and low-cost full-face mask that provides comfortable all-day usage protecting wearers from Covid-19 virus e…
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