Scuba Diving International (SDI) Computer Nitrox Practice Exam

What is the best practice regarding Nitrox mixtures for diving teams?

1. Each member should choose their preferred mixture

2. All members should use the same Nitrox mixture

3. Divers should alternate mixtures for safety

4. Teams should always use air mixtures

The correct answer is: All members should use the same Nitrox mixture

The best practice regarding Nitrox mixtures for diving teams is for all members to use the same Nitrox mixture. Utilizing a uniform gas blend among team members ensures consistency in dive planning and execution. It simplifies the process of monitoring and managing exposure limits to oxygen and prevents potential risks associated with varying mixtures, such as one diver inadvertently exceeding their oxygen partial pressure limits while another diver stays within safe levels. When team members are using the same Nitrox mixture, it enhances communication and coordination during the dive, making it easier to calculate safety stops and decompression requirements as everyone is operating under the same physiological constraints. This uniformity minimizes confusion in critical situations and can improve the safety and efficiency of each dive, reinforcing the importance of teamwork in underwater environments.