Scuba Diving International (SDI) Computer Nitrox Practice Exam

What equipment is often necessary for diving with Nitrox?

1. A standard scuba tank

2. A Nitrox-compatible regulator

3. A simple air compressor

4. A free diving mask

The correct answer is: A Nitrox-compatible regulator

Diving with Nitrox requires a Nitrox-compatible regulator because it is specifically designed to handle the higher oxygen content found in Nitrox mixtures. Regular scuba equipment may not be rated for the increased oxygen levels, which can lead to dangerous situations such as oxygen toxicity. A Nitrox-compatible regulator is constructed with materials that can withstand exposure to higher concentrations of oxygen, providing divers with a safe way to manage their gas mix. This is essential for ensuring not only the performance of the equipment but also the safety of the diver. While a standard scuba tank can also be used for Nitrox if properly labeled and prepped to accommodate the specific gas mixture, it does not guarantee safety without the appropriate regulator. Similarly, a simple air compressor is irrelevant as it is not directly involved in the dive experience itself, and a free diving mask would not provide necessary protection or functionality needed for a Nitrox dive.