Enriched Air Facts and Fantasies
Over the years there have been a number of claims supporting or trashing the use of enriched air nitrox in recreational diving. Having dived enriched air for years, I have developed my own set of opinions, having read almost every book on the topic, scoured the internet, talked to experts, and used it in a LOT of diving.
I dive enriched a lot, to the point of excluding air. I happen to believe that the best application of air is as a surface mix. I use enriched air in the depth range to 50m, using a maximum PO2 of 1.5 ata. I think that enriched air is a better choice for those trained in its use in most diving situations, and I will generally select diving destinations with the availability of EANx as one of my considerations.
