How does enriched air affect no-stop limits for diving?

Enriched air, also known as nitrox, has a higher concentration of oxygen compared to standard air, which typically consists of about 21% oxygen and 79% nitrogen. When divers use enriched air for their dives, the increased proportion of oxygen and reduced nitrogen content can be beneficial for no-stop limits.

The primary reason for this is that nitrogen is the gas that contributes significantly to the formation of bubbles during ascension; hence, by reducing the overall nitrogen exposure, divers can prolong the time they can stay at depth without needing to perform mandatory decompression stops. As a result, enriched air effectively extends these no-stop limits, allowing divers to safely enjoy longer bottom times in certain depth ranges compared to using regular air. This advantageous characteristic is one of the main reasons why many divers choose to train for and use enriched air nitrox in their diving practices.

In summary, the effect of enriched air on no-stop limits is positive, allowing for extended bottom time due to lower nitrogen absorption rates, making it easier for divers to avoid unwanted decompression stops.