According to the CNS Clock limits, what is the limit for a ppO2 of 1.4 bar during a single dive?

The limit for a partial pressure of oxygen (ppO2) of 1.4 bar during a single dive is set at 150 minutes according to the Central Nervous System (CNS) clock limits. This figure is derived from research and safety protocols aimed at minimizing the risk of oxygen toxicity, which can affect the central nervous system.

These limits are established to ensure divers can enjoy longer bottom times while managing the risks associated with higher levels of oxygen pressure. Staying within these prescribed limits is crucial for maintaining diver safety and avoiding potential health complications that can arise from excessive exposure to high ppO2 levels. When considering planning dives with enriched air nitrox, keeping track of time spent at elevated oxygen levels is an essential practice to ensure the safety of all divers.