The PADI Enriched Air Nitrox course is a specialized scuba diving course that teaches divers how to safely plan and conduct dives using enriched air nitrox, which is a mixture of oxygen and nitrogen with a higher oxygen content than standard air. Enriched air nitrox allows divers to extend their no-decompression limits, reduce nitrogen absorption, and potentially shorten surface intervals. Here's an explanation of the PADI Enriched Air Nitrox course:

Introduction to Enriched Air Nitrox: The course begins with an introduction to the benefits and considerations of diving with enriched air nitrox. Participants learn about the increased oxygen content, reduced nitrogen levels, and how these factors affect dive planning, dive times, and safety. They also explore the potential advantages and limitations of using enriched air nitrox for different diving scenarios.

Dive Planning with Enriched Air Nitrox: Participants learn how to plan dives using enriched air nitrox. They learn about the different oxygen percentages used in enriched air nitrox mixes, such as EANx32 or EANx36, and how these percentages impact dive profiles and decompression limits. They also learn about the importance of analyzing and labeling nitrox cylinders correctly.

Gas Management and Dive Tables: The course covers gas management techniques specific to enriched air nitrox diving. Participants learn how to calculate and track their oxygen exposure limits, monitor their oxygen partial pressure (PO2) during dives, and understand the concept of oxygen toxicity. They also learn how to use enriched air nitrox dive tables or dive computers to plan and execute nitrox dives.

Practical Applications: Participants have the opportunity to apply their knowledge in practical sessions. They learn how to analyze and verify the oxygen content of nitrox cylinders using an oxygen analyzer. They also practice setting up their dive equipment for nitrox dives, including adjusting their dive computer settings or using dedicated nitrox dive computers.