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Why do you need oxygen cylinders when you go scuba diving?

Updated: 8/20/2019
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11y ago

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The simple answer is ... you don't.

A majority of Scuba dives use compressed air in the cylinders. Therefore you don't need "oxygen" cylinders.

HOWEVER, if you are a diver that is diving on Nitrox, in which divers change the amount of oxygen vs nitrogen in their air, then your tank needs to be "oxygen clean" because you are putting oxygen in first, then nitrogen.

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11y ago
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Q: Why do you need oxygen cylinders when you go scuba diving?
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