Which of the following is NOT a primary concern when using Nitrox?

When considering the usage of Nitrox in diving, managing oxygen exposure, calculating safe ascent rates, and determining Maximum Operating Depth (MOD) are all critical factors in ensuring diver safety.

The concern of managing oxygen exposure is vital since Nitrox typically contains a higher percentage of oxygen compared to regular air, which can lead to oxygen toxicity if not managed properly, especially at deeper depths. Calculating safe ascent rates is essential to prevent decompression sickness since it helps to ensure that nitrogen is eliminated from the body safely. Determining the Maximum Operating Depth (MOD) is critical because it sets the maximum depth a diver can safely reach while using a specific mix of Nitrox, preventing the risks associated with oxygen toxicity at greater pressures.

Assuring proper buoyancy, while important for all diving activities, is not specifically a primary concern when diving with Nitrox compared to the aforementioned factors. This aspect is essential for overall dive safety and comfort, but it does not directly involve the unique considerations that come with gas mixtures like Nitrox. Thus, it is less critical in the context of managing the risks associated with the specific use of Nitrox during dives.