What does EANx stand for in relation to enriched air nitrox?

EANx stands for Enriched Air Nitrox, which is a type of diving gas that contains a higher percentage of oxygen and a lower percentage of nitrogen compared to normal air. Typically, regular air consists of approximately 21% oxygen and 79% nitrogen. Enriched air nitrox commonly has an oxygen content that ranges from 22% to 40%.

The reason for using enriched air nitrox is primarily to extend bottom times and reduce the risks associated with nitrogen narcosis and decompression sickness. By providing a higher concentration of oxygen, divers can safely spend longer times at greater depths while allowing for shorter surface intervals.

Understanding the composition of the gases we use in diving is crucial for planning safe dives, and recognizing the specific terminology, such as EANx, is essential for effective communication among divers and adherence to safety and training standards.