pure O2 doesnt work at 20 fsw and 30 fsw

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Posted by CalAbDiver on August 20, 2001 at 13:35:59:

In Reply to: i am trying to understand why TDI has so many different exotic gas mixes posted by CalAbDiver on August 20, 2001 at 13:20:38:

(1+33fsw/33)x 100% pure O2 = 2.0 ppO2 which could be really dangerous. you cant use O2 very deep for deco, and therefore 80% or 84% seems like it is a whole lot safer.

EAN84 is precisely ppO2 of 1.6 at 30 fsw.

just tell the gas mixer, give me EAN84. its not that hard to pronounce.

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