Quote Originally Posted by Chris M View Post
Well that worked a treat. Thank you very much James. I'm cracking a can of Guinness in your honour (sorry, we only get cans here and they probably taste nothing like the real thing).

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Draft Guinness uses a mix of CO2 and Nitrogen; the widget in a can uses Nitrogen and I believe the Guinness is carbonated. The mixing mechanisms will differ but probably not too much.
In trials, I have always fallen asleep before the evidence was conclusive.

Acorn