I might have to get one (or two) of these
Posted: Wed Jul 08, 2020 5:05 pm
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Probably the CO2 would be more significant. I'm okay at 10k feet up, so I can probably deal with a few percent less in O2.Mark Leavy wrote: ↑Wed Jul 08, 2020 9:01 pm Check your CO2 / O2 ratios with that mask.
You'll be looking good, but breathing a bit short on O2 and well beyond on CO2.
Mark