[rescue] Replacement for canned air?

[Geoff Koehler]

Bottled N2 is not that bad, because it only can dilute the oxygen in the air.  Nitrogen is 70% of air, so if you increase that concentration to 75% or so (decreasing the relative amount of O2), you can handle it for a while before things go black.   Acually, it sort of fades to grey, then black.  Its just O2 starvation, but nitrogen is not poisonous in itself.  CO2, however, is only 0.35% of air, and is a poisonous gas.  Its not as bad as CO, but is poisonous none the less.  One breath of pure CO2 will knock you out instantly.  Several more will kill you.

see:
http://www.uigi.com/MSDS_gaseous_CO2.html

Cheers, Geoff

Geoff Koehler
Saskatoon, SK, Canada
Home of the SART Observatory
207.195.94.13/sart

----- Original Message -----
From: adh at an.bradford.ma.us (Sandwich Maker)
Date: Thursday, April 8, 2004 1:25 pm
Subject: Re: [rescue] Replacement for canned air?

> "From: Geoff Koehler <koehler at shaw.ca>
> "
> "You've got to watch out with that.  Inhale a high concentration 
> of CO2 and you will hit the floor, *hard*.  Im not kidding.
> 
> that would apply to bottled n2 or anything else without o2, in large
> quantities.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
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> adh at an.bradford.ma.us                       and think what none 
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