What is the common range of oxygen percentage in Nitrox mixtures?

The common range of oxygen percentage in Nitrox mixtures typically encompasses 28% to 40% oxygen, but the most widely used Nitrox blends in recreational diving are 32% and 36% oxygen. This makes the option suggesting a range of 32% to 36% particularly relevant for divers who want to enhance their bottom time while managing exposure to oxygen toxicity.

Such selections of Nitrox are favored because they can be adjusted based on specific dive profiles and depth limits, optimizing decompression schedules and offering advantages over air by reducing nitrogen absorption. The mixtures with 32% and 36% oxygen are especially popular because they are safe and effective within the recreational diving limits, thus making them the correct choice in the context of the question.

Other ranges, while potentially usable in specialized diving scenarios, are not as commonly practiced for recreational diving purposes, which primarily consider safety and effectiveness at moderate depths.