Scuba Diving International (SDI) Computer Nitrox Practice Exam

True or False: Oxygen Enriched Air is a term some divers use to refer to Nitrox.

1. True

2. False

3. Partially true

4. Not applicable

The correct answer is: True

Oxygen Enriched Air is indeed a term some divers use to refer to Nitrox. Nitrox is a breathing gas that contains more oxygen than the standard atmospheric air, which is composed of approximately 21% oxygen and 79% nitrogen. Nitrox, specifically, typically contains an oxygen percentage above 21%, commonly 32% or 36%, which allows divers to benefit from reduced nitrogen intake and potentially longer bottom times at certain depths compared to regular air. Understanding this terminology is crucial for divers since it directly influences safety practices, dive planning, and the risk of oxygen toxicity at deeper depths. By knowing that Oxygen Enriched Air refers to Nitrox, divers can effectively communicate and understand the implications of using such gas mixes to enhance their diving experience.