pH for ethyl alcohol solutions

Brian Bjørn bbjorn at mdb.ku.dk
Wed Feb 25 13:03:42 EST 1998


john doe wrote:

> >Well, what do I know. I was told by a laboratory technician that she had
> >used pH measurements to determine ethanol concentrations - she might be
> >wrong.
>
> I WISH determining ethanol concentrations could be this easy! I don't
> believe an ethanol specific probe exists, yet.
>
> The best way, within +/-10% is probably by specific gravity. You could
> probably find a specific gravity/ethanol concentration table quite
> easily. You may also find a specialized hygrometer which would read
> alcohol concentration directly (or course this assumes no or minimal
> solutes).

Of course I confronted the technician with these thoughts of yours. After
some thinking she suddenly realized that what they had used was (tada!) :
specific gravity.


--
Venlig hilsen


Brian Bjørn
Stud.med., skolarstipendiat
http://www.mdb.ku.dk/bbjorn/





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