What must be analyzed before using Enriched Air for a dive?

Before using Enriched Air for a dive, it is essential to analyze the oxygen content of the gas. This is crucial because Enriched Air contains a higher percentage of oxygen compared to standard air. The specific oxygen content directly affects the planning and safety of the dive. If the oxygen level is too high, it can lead to oxygen toxicity, especially at deeper depths where the partial pressure of oxygen increases. Therefore, ensuring that the gas mixture's oxygen content fits within safe limits is vital for maintaining diver safety and preventing health risks during the dive.

Other factors, such as water temperature, surrounding pressure, and the weight of diving gear, are important in the overall diving preparation process, but they do not directly relate to the safety of using Enriched Air itself. The critical focus when preparing to dive with Nitrox is on accurately checking the gas mixture to ensure it is suitable for the intended depth and dive time.