What is the term used for the maximum depth dived with a given nitrox mixture?

The term for the maximum depth dived with a given nitrox mixture is known as the maximum operating depth. This concept is important because it defines the deepest point divers can safely operate while using a specific blend of nitrox, ensuring that they stay within safe limits to avoid oxygen toxicity. Each nitrox mixture has a certain partial pressure of oxygen, and exceeding the maximum operating depth can lead to dangerous physiological effects like toxicity, which can impair a diver's ability to function effectively underwater.

Understanding maximum operating depth helps divers plan their dives, including the profiles and time limits to ensure safety while using enrichment blends of oxygen. This concept is fundamental to nitrox diving and reinforces the need for proper training and adherence to dive planning protocols. The other terms do not specifically denote this critical concept in nitrox diving, which is why maximum operating depth is the most accurate choice in this context.