Which of the following is a common Nitrox mixture used by divers?

EAN32, or Enriched Air Nitrox 32, is a common nitrox mixture used by divers because it contains 32% oxygen and 68% nitrogen. This specific blend is popular among recreational divers because the increased oxygen content allows for extended bottom times and reduced nitrogen absorption, which helps decrease the risk of decompression sickness.

The choice of 32% oxygen strikes a balance that is safe for most recreational diving scenarios, particularly in depths that do not exceed the maximum operational depth limits set for this mixture. It is also compatible with the typical training and certification standards for nitrox diving, making it a widely accepted and recognized mixture in the diving community.

While other mixtures, such as EAN30 or EAN34, might be used as well, EAN32 finds a sweet spot in its effectiveness and safety for a variety of diving conditions, which likely contributes to its common use among divers.