What Type of Gas Is Used for Scuba Diving?

Underwater exploration and activities are becoming increasingly popular, from snorkeling to scuba diving. Scuba divers need to be aware of the type of gas they use during a dive to ensure their safety. The type of gas used depends on the depth and length of the dive, and there are several options available.

Nitrox gas is utilized for dives in shallow waters. It contains a mixture of nitrogen and oxygen, with a higher proportion of oxygen compared to normal air. This setup enables divers to stay underwater for extended periods without the potential danger of decompression sickness (DCS). Additionally, Nitrox aids in minimizing fatigue, enabling divers to remain submerged for longer durations.

Trimix is another type of gas often used for deep diving. It contains a combination of helium, nitrogen, and oxygen.

Helium is used instead of nitrogen because it reduces the narcotic effect caused by nitrogen at great depths. Trimix also helps reduce the risk of DCS by providing an optimal level of oxygen at deep depths.

Heliox is a mixture of helium and oxygen used for very deep dives. Unlike trimix, it doesn’t contain any nitrogen which makes it ideal for extreme depths where nitrogen can cause severe narcosis or even death in some cases. Heliox is also useful in reducing the risk of decompression sickness.

Scuba divers must be aware that each type of gas has its own risks associated with it. Nitrox, trimix, and heliox all require special training and certification before they can be safely used in a dive. Additionally, they should always use a dive computer to monitor their depth and time underwater.

Conclusion:

Scuba divers should carefully consider what type of gas to use for their dive based on its depth and length. There are several types available including Nitrox, Trimix, and Heliox; however, each has its own risks associated with it that should be taken into consideration before using them during a dive.

Photo of author

Lindsay Collins