What is the typical percentage of oxygen found in Enriched Air Nitrox mixtures?

Prepare for the IANTD Enriched Air (Nitrox) Test. Enhance your understanding with multiple choice questions and explanations. Boost your confidence and readiness!

Enriched Air Nitrox typically contains a higher percentage of oxygen compared to regular air, which has approximately 21% oxygen. The most common Nitrox mixtures used in recreational diving are those with an oxygen content ranging from 32% to 40%. This range allows divers to take advantage of the benefits of increased oxygen, such as reduced nitrogen absorption, which can aid in avoiding nitrogen narcosis and decompression sickness.

The choice of 32% to 40% not only maximizes the advantages of enriched oxygen but also remains within safe operational limits for diving. Exceeding this range, especially moving towards the 50% to 60% categories, begins to introduce risks associated with oxygen toxicity, especially at greater depths. Therefore, the selected range is optimal for maintaining safety while enhancing diving experiences.

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