Oxygen Toxicity Discussion

[Rich Keller]

My issue with Nitrox is the narrowing of the safety margins not weather 1.4 is better or worse then 1.6. In my opinion the safety margins are very important to the divers who do not fit into the profile of the people these tables were designed around. Again, I am sure you can show me on paper that by these tables your calculations are correct but that applies only to the people the tables were designed for. Again, I do not see too many in shape divers when I am out on a charter. I know Nitrox sells more training and equipment for the LDS but I think it is at increased risk to the diver and for not much gain.

 

[Tortuga68]

My issue with Nitrox is the narrowing of the safety margins

I don't understand what you mean by this.

Your point about unfit divers is clear, but that applies to all forms of diving, not just EAN.

The reason people mention PPO2 is that breathing air at 30m and breathing EAN28 at 20m (for example) are the same in terms of oxygen loading - so where's the risk?