For dives in the range of 50 ft to 90 ft, EAN 36 is the best mix.
Why not 40% ?? 40% 1.4 is 83' 1.6 is 99' Wouldn't this be best mix for a dive to 80 FSW?
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For dives in the range of 50 ft to 90 ft, EAN 36 is the best mix.
I'm not sure about that...
In fact, I'm not sure if anyone is sure about that
Can anyone else confirm this? I'm not suggesting that you yourself just perform a controlled ascent while seizing, but if someone can keep you reg in and get you well above the MOD, you can reverse the toxic affects high PO2 O2 is having on your CNS. I'm pretty sure this is in the recent PADI Enriched Air Diver manual.
The general rule is that EANx is ideal, and better than air, for any depth between 50 ft and 150 ft.
For dives in the range of 50 ft to 90 ft, EAN 36 is the best mix.
For dives in the range of 100 ft to 130 ft, EAN 32 is the best mix.
For dives in the range of 130 ft to 150 ft, EAN 25 is the best mix. However this is normally considered a technical deco dive, since your NDL would only be 5 mins.
nereas - I don't think that there's any "general rule" as you described.
He's reading from the Book of Nereas. He does that from time to time.
When you get to Volume II: Decompression, it gets really fun.