Why does nitrox require a dedicated cylinder?

The need for a dedicated cylinder for nitrox primarily stems from the importance of preventing confusion with regular air cylinders. Since nitrox mixtures contain varying levels of oxygen, which can influence the physiological effects on divers, it is critical to clearly distinguish nitrox from standard air. Using separate cylinders helps ensure that divers are using the correct gas mixture for their dives, thus minimizing the risk of inadvertent exposure to the wrong breathing gas. This distinction is important in maintaining diver safety and managing the risks associated with oxygen toxicity and decompression sickness.

Understanding the composition of gases and the specific needs in different diving environments reinforces the necessity for labeling and using dedicated equipment for nitrox, as well as adhering to guidelines and training specific to enriched air diving.