What is the primary goal of using a Nitrox mixture in diving?

Using a Nitrox mixture in diving primarily aims to extend bottom times and reduce nitrogen absorption. Nitrox, typically defined as a mixture of oxygen and nitrogen with a higher concentration of oxygen than normal air, allows divers to take advantage of the lowered partial pressure of nitrogen in the breathing gas. This reduction in nitrogen levels helps decrease the amount of nitrogen absorbed into the body's tissues while diving.

With less nitrogen absorbed, divers can extend their bottom times compared to using regular air, thus allowing longer stays at depth without exceeding no-decompression limits. This is particularly beneficial in recreational diving scenarios where divers seek to maximize their underwater experience while minimizing the risk of decompression sickness, commonly known as "the bends."

While increasing buoyancy, eliminating the need for surface intervals, and allowing deeper dives might be associated concepts in diving, they do not directly correlate to the primary advantage of using Nitrox. The main focus remains on reducing nitrogen absorption and extending bottom times.