What is the oxygen exposure limit for recreational Nitrox dives?

The oxygen exposure limit for recreational Nitrox dives is 1.4 ATA. This limit is set to ensure divers minimize the risks associated with oxygen toxicity, which can occur when divers are exposed to higher partial pressures of oxygen for prolonged periods. At 1.4 ATA, divers can safely breathe Nitrox mixes containing higher percentages of oxygen without significantly increasing the risk of toxicity during recreational dives.

Understanding this limit is critical for planning dives, as exceeding this pressure, particularly during deeper dives or longer exposure times, can lead to serious health complications, including central nervous system toxicity. It’s important for divers to adhere to this threshold to ensure their safety while taking advantage of the benefits of diving with enriched air Nitrox, such as extended bottom times and reduced nitrogen absorption.