mikemill
Contributor
Ok let me preface this post by saying I'm asking just out of curiosity and not looking to bypass any type of training
I know that for gases there is a maximum operating depth before it becomes toxic/narcotic. The MOD would be the maximum depth that you could safely breath that gas.
I was wondering if there was any gases with a minimum operating depth above which it was not safe to use. The scenario I have in my mind is one where you were using a gas with a low % of O2 and some type of other filler gas. At a certain depth the increased pressure would (I think) allow you to inhale enough O2. However, in too shallow of a depth you wouldn't be taking in enough O2 to maintain bodily functions and would have to switch to a richer mix.
I know that for gases there is a maximum operating depth before it becomes toxic/narcotic. The MOD would be the maximum depth that you could safely breath that gas.
I was wondering if there was any gases with a minimum operating depth above which it was not safe to use. The scenario I have in my mind is one where you were using a gas with a low % of O2 and some type of other filler gas. At a certain depth the increased pressure would (I think) allow you to inhale enough O2. However, in too shallow of a depth you wouldn't be taking in enough O2 to maintain bodily functions and would have to switch to a richer mix.