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SSI Enriched Air Nitrox (EANx) Specialty

The SSI Enriched Air Nitrox (EANx) Specialty is one of the most popular diving courses, allowing divers to use breathing gas with a higher percentage of oxygen than standard air. By diving with Enriched Air Nitrox, divers can extend their no-decompression limits, reduce nitrogen absorption, and often enjoy longer or safer dives.

During the course, you will learn how to safely plan and conduct dives using Nitrox mixes, typically EAN32 or EAN36. The training focuses on understanding the benefits and limitations of enriched air, how to analyze the oxygen content in a tank, how to set a dive computer for Nitrox, and how to calculate the maximum operating depth (MOD) for different gas mixtures.

A key part of the course is learning oxygen exposure limits, dive planning, and safe handling procedures when using enriched air. Divers will also practice analyzing their tanks and properly labeling them before diving.

The SSI Enriched Air Nitrox course is usually completed in half a day to one day and is mainly theory-based. Some dive centers also include optional Nitrox dives to practice using the gas underwater.