Gases in scuba tanks

Scuba tanks contains highly pressurized breathable gases. These tanks makes scuba diving possible. Pressure inside the tanks is measured in bars and the correct pressure for the tanks lie between 232 bars, 3,000 pounds per square inch and 300 bars, 4500 pounds per square inch. One more thing that you need to check is internal volume. Internal volume of scuba tanks are measured in liters and normally tanks hold 3 to 18 liters of gas. Compressed air is used in most recreational SCUBA diving. Commercial diving and wreck diving take people to deep environments and high pressure, where regular air can be limiting and even dangerous. These dives are greatly improved through the use of special gas mixes.

Scuba tanks are filled with compressed air which is the mixture of 78 percent nitrogen, 21 percent oxygen, 1 percent other gases. Nitrox is designed to check the problems of nitrogen for long-duration and repeat divers. Nitrox gas mix increases the amount of oxygen in the tank to 32 or 36 percent, with a corresponding decrease in the amount of nitrogen. To overcome the dual hazards of nitrogen and oxygen on dives beyond 130 feet, and especially beyond 165 feet, divers use a gas mixture called trimix.

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