What is it? In recreational diving, Enriched Air Nitrox (EANx) is any nitrogen/oxygen mix with extra oxygen added. The Big Difference: * Standard Air: Contains roughly 21% Oxygen and 79% Nitrogen. Nitrox: Has a higher oxygen proportion, typically 32% or 36%. Decoding the Names: You’ll often hear terms like “Nitrox 32” or “EANx36.” EA stands...