On Wed, 14 Nov 2007 17:39:19 -0600, Dallas wrote:

I distinctly remember reading that medical O2 was not acceptable (legal?)
for aviation.

Never mind.

(I did read or hear someone say that... but it appears to incorrect.)

Here's a good article:
http://www.avweb.com/news/pelican/182079-1.html


"Oxygen is oxygen. It is the substance that matters, not the intended
purpose. These days, welding, medical, and aviation oxygen are exactly the
same. All three come from the same tank of liquid oxygen (LOX). The
liquified form is the cleanest, purest, driest form of oxygen (or any
substance) you'll find anywhere."


--
Dallas