Sandtiger Steve
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Hello -- something has been driving me crazy for some time and so i hope someone can answer this. My instructors (c-card, nitrox, etc) have always been very clear about the dangers of oxygen toxicity, and that compared to DCS or narcosis, it's far worse because you don't recover by just ascending.
So, i always have in the back of my mind that going to 20ft or so on 100% O2 means instant death. So does going to 172 ft (1.4 ATA) on Air. However, i keep reading about these guys setting records, diving to 400+ feet on air. that seems to me to be impossible (i didn't do the partial pressure calculation but it's obviously a lot!).
Any help?
thanks
So, i always have in the back of my mind that going to 20ft or so on 100% O2 means instant death. So does going to 172 ft (1.4 ATA) on Air. However, i keep reading about these guys setting records, diving to 400+ feet on air. that seems to me to be impossible (i didn't do the partial pressure calculation but it's obviously a lot!).
Any help?
thanks