>Paul:>"Let's have beers labelled "absolute ethanol" (which, I note>from the Sigma catalogue also contains minute traces of lead>as well as arsenic).">>You can buy lead free Ethanol - I use it in measuring the lead>content of unleaded gas. It is, however, "not cheap" :-(>>RichardThanks for the tip Richard! It may be lead-free, but what *does* it contain?! "Absolute" is 99.99998% pure - and to buy it in the UK for laboratory purposes means the University also has to pay duty to HM Customs + Excise (simply because it can be drunk - but only by the really desperate!!).Cheers,Paulhttp://www.strontiumdog.plus.com/sbird.jpgwww.BAVirtual.co.uk[p]Officially licenced by British Airways plc for use of name and logo[/p]

It's about 98% pure, as it's 'denatured' with a sulphur compound specifically to make it undrinkable and thus not under the purview of the "revenuers".The only contaiminants it's guaranteed not to contain are lead and phosphorus.Richard

just because you're paranoid doesn't mean they're not after you :-rotor