Winterpeg
Contributor
I got Nitrox certified in the fall and used it for the first time on my trip to Coz in Feb. I've read a couple of really good threads on SB about the uses, benefits, and risks of Nitrox, but there's still one concept I don't quite get. Can anyone explain (not too technical!) why gas/air consumption doesn't decrease when using Nitrox? In other words, if I a diver uses air and then repeats exactly the same dive on Nitrox, why wouldn't the tank last longer? Common sense suggests that if the air you breathe contains more oxygen, then shouldn't your respiratory rate decrease to compensate?