At 02:49 PM 11/18/2000 +1100, Andrew Fildes wrote:
>I think the 70% you're referring to is 70 proof spirit - that's about 40%
>by volume actual ethanol. (Never understood that!) Much better with pure
>ethanol or isopropyl which, I think is the main component of video/audio
>head cleaning fluids.
Nah, it's 70%. Alcohols not destined for human consumption are always referred
to in their percentage strengths in Canada, rather than proof. Proof is also
rapidly becoming obsolete in the beverage sector -- most distilled spirits in
Canada now list their percentage of alcohol, although a few imported from the
U.S. and other places still use "proof."
The two strengths of isopropyl alcohol available in drugstores here are 70%
(the other 30% being water) and 99%. I use the 99 0.000000or all kinds of
cleaning purposes of electronics, fine mechanicals, etc. However, methanol is
still better for cleaning optics, I find.
"No, this is the Great Theatre of Life. Admission is free, but the taxation is
mortal. You come when you can, and leave when you must. The show is
-- Robertson Davies
1913 - 1995
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