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What Is EANx?

By , About.com Guide

Photo of a scuba diver preparing to dive with EANx

A scuba diver prepares to dive with EANx using tanks in a sidemount configuration.

Image copyright istockphoto.com, dstephens
Question: What Is EANx?
Answer:

EANx (or EAN) is an abbreviation for enriched air nitrox, a mixture of oxygen and nitrogen used as a breathing gas in in scuba diving. EANx contains only nitrogen and oxygen. any other gasses are only present in trace amounts. The term "EANx" specifically denotes a gas mixture that has a higher percentage of oxygen than normal air (more than 21% oxygen); it is essentially air that has been "enriched" with additional oxygen. While EANx may contain any percentage of oxygen greater than 21%, the most common mixtures are EANx 32 (NOAA Nitrox I) and EANx 36 (NOAA Nitrox II) which are have 32% and 36% oxygen respectively. Special training and certification and required to dive with EANx.

EAN FAQs
• Why Dive With Nitrox?
• 7 Risks and Limitations of Diving With Enriched Air Nitrox
• What Is Nitrox?
• What Is Enriched Air Nitrox?
• What is EAN?
• What Is NOAA Nitrox I?

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