--- Harry <gnikomson2000@...
> You need a alcoholmeter
> Can I draw your attention to this?
> A hydrometer measures the density of a liquid compared to water. For
> our purposes, this is for finding the potential alcohol that will be
> obtained through fermentation, as well as the actual fermented
> alcohol percentage through a simple calculation.
In the quoted context, this applies to measuring wort.
> A hydrometer will not work for testing the alcohol percentage in a
> finished product, however. Water is more dense than alcohol,
> therefore a hydrometer's use is restricted to finding density when
> compared to water, and not alcohol.
Bwuh? We *are* comparing the density to water.
> To test alcohol percentage in a
> finished product, you need an alcoholmeter.
Therefore, in the finished product of a given brew, I agree. However, in a
distillate, we are in fact measuring the ratio of ethanol to water (fusels and
such I'm taking to be a negligible amount in this case), are we not? Unlike
wort/mash, there are no other factors such as sugars and suspended solids that
would separately affect the SG.
> Cited for academic usage only.
> Source: http://www.honeycreek.us/SpecficGravityTables.htm
> Lots of good stuff, tables & calcs there. Check it out.
Agreed...lots of nifty info. However, it's all brewing specific. Given that
it's stated that alcohol has a specific gravity of 0.789, it is therefore
measureable - with a hydrometer...just one that's scaled to read <1.0
Further digging via Google reveals that alcoholmeters are merely hydrometers
calibrated in %abv with temp correction factors in their documentation. From
Widder, a manufacturer of alcoholmeters, their description of how to use/read
has at least one paragraph where
the terms appear to be used interchangably.
Bear in mind, my intent is not to be argumentive, but rather that since what I
have on hand is a hydrometer ranged from 0.650-1.000, that's what I'm working
with and am looking to for reference. From my calculations, my reading of
0.805, temp corrected to 0.806 works out to ~92% abv.