alchohol content

[aavery55]

How do I figure my alchohol content. I have searched and there are severl different calculations. Confused -

 

[Runningwolf]

This is one calculator I use.

http://www.brewersfriend.com/abv-calculator/

 

[Wade E]

I use starting sg - finished sg x 134.1
In example 1.090 - .996 x 134.1 = 12.605 % abv

 

[cpfan]

How do I figure my alchohol content. I have searched and there are severl different calculations. Confused -

Very true, and they basically provide a very similar number. Take a sample set of readings and try out the calculations.

EG continuing with Wade's example 1.090 and .996

1.090 - .996 x 134.1 = 12.605 % abv
1.090 - .996 x 133.0 = 12.502 % abv
1.090 - .996 / 7.46 = 12.600 % abv
Not much difference between these three.

Runningwolf's link produces
1.090 - .996 x 131.25 = 12.34 % abv 12.34%
ABV =(76.08 * (og-fg) / (1.775-og)) * (fg / 0.794) = 13.1%

Personally I don't like either of the formulae at this link, but it doesn't change the taste of the wine, just your perception of the alcohol content.

Steve

 

[jdriver84]

How accurate are the Vinometers you can buy?

 

[arcticsid]

Damn Steve, I thought Algebra in college was tough!!!

I am just going to use my hydrometer and all of you in here to figure that out.

x(t)=fds(t)-z(s)-t

Solve for: T

 

[Wade E]

The vinometer is very inaccurate especially if there is any resual sugar. Dont waste your money!

 

[aavery55]

Thank you so much everyone - well it calcs out to 8 %. Had a little tasting with my brother and his friend - we all think it has great flavor, I think it has a bit of a burn on the way down, but tastes great!! Will probably bottle today. So excited this is my first wine. Can't wait to start the next one!!

 

[Runningwolf]

Steve, there are several of those calculators around and that is just the first one I found. The chance of me making a mistake is far greater doing the math formula then using a calculator that already figures it out for you with a few numbers.

I use several different ones for sugar calculations and both of them will give me different addition amounts also. The difference is close enough though to run with either one.

 

[Brintk]

I use the calculator found at; http://web2.airmail.net/sgross/fermcalc/fermcalc_applet.html

How accurate it is? I don't know, but it hasn't gotten me in any trouble and it has a myriad of different options to calculate sugar, sulfites, mass conversions, and etc.