What is the typical oxygen percentage in Enriched Air Nitrox for recreational diving?

Enriched Air Nitrox (EANx) is a blend of nitrogen and oxygen used in recreational diving to reduce nitrogen absorption in the body, thereby minimizing the risk of decompression sickness. The typical oxygen percentage in Enriched Air Nitrox for recreational diving generally falls within the range of 32% to 40% oxygen.

Using EANx with oxygen concentrations in this specific range allows divers to extend their no-decompression limits and enhance their experience underwater while still maintaining safe operational parameters. Higher percentages of oxygen, like those found in blends above 40%, may lead to oxygen toxicity, especially at greater depths, which is why they are typically not used for recreational purposes. Therefore, the 32% to 40% range is ideal for achieving the benefits of reduced nitrogen levels while remaining within safe limits for recreational diving.