What is the maximum recommended partial pressure of oxygen for recreational diving with EANx?

The maximum recommended partial pressure of oxygen for recreational diving with EANx is 1.4 ATA. This level is set to minimize the risk of oxygen toxicity, which can increase significantly at higher partial pressures of oxygen. When divers breathe oxygen at a partial pressure of 1.4 ATA, they maintain a balance that allows for safe diving practices while still benefiting from the advantages of using enriched air nitrox, such as decreased nitrogen absorption and extended bottom times.

At partial pressures above 1.4 ATA, the risk of central nervous system toxicity rises, potentially leading to serious health issues during dives. Therefore, adherence to the 1.4 ATA limit is crucial for recreational divers to ensure safety while enjoying the benefits of using nitrox.