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11-03-2009, 05:18 PM
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#1
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Confused...(again)
I have read a half-dozen places where the simple formula for calculating alcohol percentage is:
Starting SG - Ending SG x (????) = % alcohol by weight.
The (????) figure ranges from 105 to 130 to 135.
What is the correct factor by which to multiply, in this simple formula???
I also heard that multiplying the a.b.w. figure by 1.25 would yield the a.b.v. percentage. True?
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11-03-2009, 05:28 PM
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#2
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Country Wines.
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I had the same problem recently. The discussion can be found here:
http://www.winemakingtalk.com/forum/f5/hydrometers-refractometers-brix-sg-abv-conversions-4495/
Hope it helps.
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From one philosopher to another...
"I drink therefore I am."
[Having re-read Luc's post his conclusion reminds me of the Aristotelian foundation of epistemology, though some may disagree.]
Last edited by Becks the Elder; 11-03-2009 at 05:37 PM.
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11-03-2009, 06:18 PM
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#3
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Quote:
Originally Posted by Becks the Elder
I had the same problem recently. The discussion can be found here:
http://www.winemakingtalk.com/forum/showthread.php?t=4495
Hope it helps.
.................................................. ...........
From one philosopher to another...
"I drink therefore I am."
[Having re-read Luc's post his conclusion reminds me of the Aristotelian foundation of epistemology, though some may disagree.] |
Thanks, Becks! I searched, but didn't find that thread.
Actually, (as usual) Luc's explanation cleared up a lot of questions for me. I guess a person just has to be in the right frame of mind to assimilate it. 
All I can say to the philosophical ramifications of vinting is, In Vino Veritas! 
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11-03-2009, 10:15 PM
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#4
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According to the "Home Winemaking Book" it is (OG - FG)/7.36
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11-04-2009, 01:15 AM
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#5
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Ive always used ssg - fsg x 131.4 and thats close enough for me.
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11-04-2009, 02:10 AM
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#6
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I use ssg - fsg x 133.
BTW dividing by 7.36 is the same as multiplying by 135.86. It gives a higher alcohol number than the factors that Wade and I use.
Sometime ago, somebody said that they enjoyed the higher alcohol wine more, so they use the 7.36 factor.
Steve
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"Visual signs of fermentation are highly overrated"
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11-04-2009, 02:23 AM
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#7
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Quote:
Originally Posted by cpfan
sometime ago, somebody said that they enjoyed the higher alcohol wine more, so they use the 7.36 factor.
Steve
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lmao!
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11-04-2009, 02:27 AM
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#8
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O.P., you're not alone on the confusion. I thought it was "ab(t)=abv/(p)2x2c-7. 
And I wondered why I failed chemistry and 3 algebra classes at UAF? 
Good thing the flying lessons didn't confuse me as much!!!LOL
Troy
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Troy
"Never let a seal lick your finger after you have been handling fish, because, afterall, a seal is going to be a seal" -Eskimo Proverb
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11-04-2009, 02:39 AM
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#9
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Yep cp, thats funny as heck! 
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11-04-2009, 02:52 AM
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#10
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Okay, we determined that we were going to use anywhere between 131.4 to 135, depending upon how strong we want to say our wine is. That's a.b.w.
What about that x1.25 to get a.b.v.?
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