--On 23 April 2004 12:53 +0100 Piers Hemy <piers@xxxxxxxx> wrote:
> I was having the same thoughts Jez, having a couple of weeks ago bought a
> can of the 'real' stuff made for the job. It contains a blend of Argon,
> Carbon Dioxide and Nitrogen. I assume the Nitrogen is there as the
> propellant, and the Carbon Dioxide as the 'filler' to make it affordable.
> I will know what to use next time!
That's interesting - the presence of CO2, that is. I'd rejected that as a
possibility on 2 counts: firstly it dissolves in water, secondly, when
it's dissolved in water it makes the water slightly acidic, which is a bad
thing for developers to be.
Oh yes, I should mention that propane will also do the job, and might be
cheaper for the outdoor types amongst us.
----------------------
Ian Nichols, School of Chemistry
I.A.Nichols@xxxxxxxxxxxxx
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