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Old 05-12-2008, 09:19 AM
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SVD SVD is offline
Join Date: Mar 2008
Location: Kansas City, MO
Posts: 2,555
Default Re: Tutorial: Scuba Power for Lindsay Airgraver

The advantage of N2 over CO2 is that CO2 is heavy and will pool. Open a CO2 cylinder in a basement and you can get the air to unhealthy levels pretty easily.

N2 isn't going to keep you alive either, but since air is 70% N2 it won't collect in the low spots. If you have no ventilation then you can probably hurt yourself releasing it into the room but I think the CO2 levels (from you breathing) will get to you first. Most people that suffocate in an enclosed space die from CO2 buildup before the O2 levels can drop low enough to kill them.

On a semi-related note I'm going to start another thread on picture posting showing two ways to do the thumbnail thing.

Steve :->
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