caribou
Registered
We all know about how nitrogen loading at depth limits our bottom time (more than our air consumption.
at recreational depth (say 120 feet), if we were to breath 21% oxygen, 79% helium (or any other inert gas, excluding nitrogen), asides from the problem of getting such a fill, would it eliminate NDL ?
Or would we see the same problem, i.e. the helium goes into solution in the bloodstream, and creates bubbles as the pressure decreases, prompting the need to create tables again...
if not then, since 21% oxygen isn't toxic at this depth (120 feet), what else could prevent us from staying down as long as the gas supply allows and then ascend slowly back up.
Is there physiological problems I don't see or is it just that creating such a mix is not practical, or not stable ?
at recreational depth (say 120 feet), if we were to breath 21% oxygen, 79% helium (or any other inert gas, excluding nitrogen), asides from the problem of getting such a fill, would it eliminate NDL ?
Or would we see the same problem, i.e. the helium goes into solution in the bloodstream, and creates bubbles as the pressure decreases, prompting the need to create tables again...
if not then, since 21% oxygen isn't toxic at this depth (120 feet), what else could prevent us from staying down as long as the gas supply allows and then ascend slowly back up.
Is there physiological problems I don't see or is it just that creating such a mix is not practical, or not stable ?