What percentage of oxygen is delivered by a simple face mask?

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Author Question: What percentage of oxygen is delivered by a simple face mask? (Read 483 times)

leo leo

Hero Member
Posts: 566

on: Apr 27, 2019

What percentage of oxygen is delivered by a simple face mask?
◦ 40 to 60
◦ 60 to 80
◦ 80 to 90
◦ 95 to 100

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kristenb95

Sr. Member
Posts: 318

Reply #1 on: Apr 27, 2019

40 to 60

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