Re: For Critique
- --- In Distillers@yahoogroups.com, Trid <triddlywinks@...> wrote:
>However, in a
> Bwuh? We *are* comparing the density to water.
>>>>>>>>>>No we're not. Bear with me.
> Therefore, in the finished product of a given brew, I agree.
> distillate, we are in fact measuring the ratio of ethanol to waterratio of the ethanol in a liquid that contains some ethanol (amount
>>>>>>>No we're not. In a finished product, we're measuring the
as yet unknown) to the known SG or density of PURE ETHANOL, not
water. This resulting figure is the Alcohol By Volume not the water
by volume. The other liquids/substances in the sample could be many
things besides water.
Alcoholmeters are calibrated to pure ethanol at 20°C. Hydrometers
are calibrated to pure water at 4°C. See the difference? Even
though technically they are both hydrometers. All that name means
is a closed tube that floats.
> Agreed...lots of nifty info. However, it's all brewing specific.
> it's stated that alcohol has a specific gravity of 0.789, it istherefore
> measureable - with a hydrometer...just one that's scaled to read<1.0
>>>>>>>>>>>You won't get meaningful measurements, because the twoinstruments are calibrated to different pure substances at different
> Further digging via Google reveals that alcoholmeters are merely
> calibrated in %abv with temp correction factors in theirdocumentation. From
> Widder, a manufacturer of alcoholmeters, their description of howto use/read
> it (http://www.widdernet.de/alcoholmeter.html) has at least oneparagraph where
> the terms appear to be used interchangably.since what I
>>>>>>>>>See my explanation above.
> Bear in mind, my intent is not to be argumentive, but rather that
> have on hand is a hydrometer ranged from 0.650-1.000, that's whatI'm working
> with and am looking to for reference. From my calculations, myreading of
> 0.805, temp corrected to 0.806 works out to ~92% abv.achieve. But it can only be at best a broad approximation, not an
>>>>>>>>>>>>>I know what you mean, and what you're trying to
accurate measurement, for the reasons stated above. Buy an
alcoholmeter. They're not much more expensive than a fermentation
hydrometer. Then check your measurements using both. You'll see
big differences as the percentage of ethanol reduces. And the
comparison scale isn't linear, either. That's why it's impossible
to produce a chart to swap between one and the other.
- Random thought as I spied a bag of bulk cous-cous that's gone unused for nearly
Are the starches in pasta readily convertable with a little 6-row? Anybody
ever try? I'm going to take a stab at it...meanwhile, if I'm making a horrible
mistake here, please feel free to point, giggle, and sooner or later let me