What are the common mixtures of Enriched Air Nitrox used in diving?

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The choice of 32% oxygen (often referred to as EAN32) and 36% oxygen (EAN36) are recognized as common mixtures of Enriched Air Nitrox used in recreational diving. These mixtures are designed to increase the proportion of oxygen while reducing nitrogen in the breathing gas, which allows divers to reduce their exposure to nitrogen and consequently minimize the risk of decompression sickness.

EAN32 is particularly popular among divers because it balances increased oxygen benefits while still allowing for relatively shallow dives with moderate bottom times. EAN36, while offering even higher oxygen content, is often used for slightly shallower and shorter dives due to its increased risk of oxygen toxicity at greater depths.

The use of these specific mixes allows divers to extend their no-decompression limits and spend more time at depth safely, making them widely adopted within diving communities.

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