Archived Testing Oxygen Levels Under A Mask w an OSHA Air Quality Monitor (youtube.com)
submitted ago by tom47
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Archived on: 9/30/2020 10:00:00 AM
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Archived Testing Oxygen Levels Under A Mask w an OSHA Air Quality Monitor (youtube.com)
submitted ago by tom47
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[–] 24536969? 0 points 2 points 2 points (+2|-0) ago
And the stress of breathing through a mask lowers their sp02 enough to measure even in a single hour.