Enriched Air Nitrox

The Nitrox course is an entry level certification for divers who want to use enriched air nitrox (EAN) as their breathing gas.


During this course you will learn about the benefits, hazards, and procedures for using nitrox mixes containing from 22 through 40 percent oxygen.


Since the Nitrox course is essentially an informational and academic based course, no dives are required as there are no skills to evaluate.



Category: Product ID: 3675


Enriched Air Nitrox Diving

Enriched Air Nitrox Diving… (EAN) refers to a nitrogen/oxygen mixture with a percentage of oxygen higher than the 21 percent found in normal air. Nitrox 32% is probably the most common and tanks filled with EAN are usually marked with a Nitrox Green and Yellow tank band with the mix percentage. The higher percentage of O2, and the lower percentage of Nitrogen, allows divers to extend the no-decompression limits, shorten surface intervals or to stay well within the No Decompression Limits (NDL) and get an added safety buffer for decompression sickness in certain diving circumstances.


In conclusion, Enriched Air Nitrox Diving allows divers to spend more time underwater within the NDL by reducing the amount of Nitrogen while increasing the percentage of Oxygen in the breathing gas.


It is important to know about the physiological effects of Oxygen at depth as well as calculating Maximum Operating Depths (MOD) for the specific mix you will use during your dive. Also you can calculate the best mix when you want to go to a specific depth.


Furthermore, the Enriched Air Nitrox course is a prerequisite for some Technical Diving courses such as the PADI Tec Deep Diver (Tec 40, Tec 45 and Tec 50), and the TDI Advanced Nitrox course.



Student Prerequisites


-Minimum Age 18, 15 with parental consent

-Open Water Diver Certification



Course structure and duration


Independent study (Student manual or E-learning)

Theory review

Gases analysis

Tanks labeling

Written exam

Diving (Optional)