Re: Oxygen saturation concentration

> From: psears at NRCan_gc.ca (Paul Sears)
> Date: Tue, 25 Jun 1996 08:35:04 -0400 (EDT)
> 	This oxygen concentration corresponds to the equilibrium
> between oxygen in solution and the oxygen in the air.  It corresponds
> to an oxygen partial pressure of about 0.2 atmospheres.  If you want
> oxygen bubbles to form, you need a local concentration corresponding
> to 1 atmosphere pressure of oxygen, i.e. thirty-odd mg/litre.
> 	The word "saturation" has to be used carefully - it must be
> clear what the other phase is; in this case a bubble of oxygen gas at
> 1 atmosphere.

OK, I'm confused.  I see bubbles forming at around 110% of saturation.
The dissolved O2 is measured with a Lamotte kit and then compared with
a chart I have which shows saturation at something like 6.1 mg/l (from
memory) at my altitude.  Are we talking two different things here?