question to figure alcohol%

[Sirs]

ok started with 9 gallon must starting sg was 1.074 fermented down to .992 I strained and racked and got 7 gallon out of it, added 9 pounds more sugar(course heated & dissolved it in about a half gallon of the wine once cooled) got SG back up to 1.052 it continued to ferment and has now been at 1.032 for abit over 5 days sampled it and it is really good not real sweet still got just a hint of a twang afterward. I had used really ripe petit verdot no water was added at all it's cleared alot already nice dark color.
Soooo how do I figure what alc.% it has using what info I got?
Hey I'm always learning. LOL
Eddie

 

[Wade E]

Sorry, I cant remember how to do this as I had that info on my old hard drive which is gone, I believe its not the same as just adding together for some reason though, why I dont know.

 

[pwrose]

Wade I think that it just a matter of adding and subtracting then multipling. I could be wrong but I think this is how it would go

Starting SG 1.074
First measured SG is .992
difference of .082
Second SG reading was 1.052
last measured SG was 1.032
difference of .020

Add the two differences (.082 + .020 = .102)

Multiply
.102 x 131.4 = 13.4%
with a sweetness of about 1.030 which is pretty close if not a desert wine.

Maybe I am off but I think that is pretty close to what the % would be.

 

[Wade E]

That is what I had originally thought but was told differntly by many people and they had a equation which I pasted and copied but its gone.

 

[Deezil]

1.074 - 0.992 = 0.082
1.052 - 1.032 = 0.020

SG Movement: 0.102

(Starting SG - Finished SG) * 131.8 = %ABV
(Starting SG - Finished SG) / .735 = %ABV

Depending on the formula you use, basically substitute the 0.102 for the part of the equation in ( ) and calculate

1 - 13.44
2 - 13.87

Ish..

 

[ffemt128]

I was told add the individual PA amounts. I came up with 13.85 but the formula I had you divided the SG difference by .736 instead of .735. Not much difference and I can't remember where I saw the .736 so it could very well be wrong.

 

[Julie]

Well you guys may have figured the alcohol differently but you are all pretty much in the same ballpark, roughly 13.5% so I would just go with PW's since his was the most simplest. Sometimes I think you guys just like formulas

 

[mmadmikes1]

Formula or any thing that comes in bottles and has a nipple

 

[Julie]

Formula or any thing that comes in bottles and has a nipple

Ooooh Mike you are soooooooooo bad.

 

[Sirs]

Formula or any thing that comes in bottles and has a nipple

Amen roflmao

 

[winemaker_3352]

1.074 - 0.992 = 0.082
1.052 - 1.032 = 0.020

SG Movement: 0.102

(Starting SG - Finished SG) * 131.8 = %ABV
(Starting SG - Finished SG) / .735 = %ABV

Depending on the formula you use, basically substitute the 0.102 for the part of the equation in ( ) and calculate

1 - 13.44
2 - 13.87

Ish..

Those are the ones i use.