What is the maximum percentage of oxygen typically used in Enriched Air Nitrox?

The maximum percentage of oxygen typically used in Enriched Air Nitrox is 40%. This level is significant because it allows for reduced nitrogen narcosis and extended bottom times while diving, which offers advantages for divers seeking to enhance their dive experience. With an oxygen concentration of 40%, divers can achieve a more substantial increase in oxygen availability, thereby allowing for more efficient use of this essential gas during their dives.

Generally, exceeding this percentage can have implications for oxygen toxicity, particularly at greater depths, which is why many diving organizations set 40% as the upper limit for standard recreational enriched air diving. This percentage is widely accepted and used within diver training programs and is critical for maintaining safety and effectiveness in various dive conditions.