On 4 Sep 2011 at 20:11, Tony Duell wrote:
   And
unfortunately I don't have any dry ice (solid CO2). Grrrr. 
 It's at times like this that I wish I had contacts in
 industry/universities... 
 
Is solid CO2 considered a hazardous substance in the UK?  You can get
it in just about any medium-sized city in the US, usually sold by
"ice companies".   Can one buy acetone in the UK, or is that also on
the proscribed list?
--Chuck