# Home Brew Enthusiasts Group Information Group Forum Group Discussions % Alco

Discussion in 'Home Brew Enthusiasts' started by chrisboyo, Nov 4, 2015.

1. ### chrisboyo

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How can I tell the Alco % of my wine ?

2. ### pappajohnFunsterLife Member

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Surely a hydrometer will show gravity which should relate to alcohol content

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3. ### Ralph-n-BevFunster

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Ralph's got a thermometer looking thing . He puts some brew in a test tube thing and drops the thermometer thing in it. Depending on how it sits in the brew = how strong it is.
I just drink it !

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4. ### DBKFunster

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You need a hydrometer, you get different ones for beer and wine.

Then use it before fermentation, it essentially measures the amount of sugar and from that can calculate how much can be turned to alcohol. There will be a scale on the side of the hydrometer showing percentage alcohol.

To be really accurate take a reading at the end of fermentation and subtract from the first reading before fermentation.

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Take a "before fermentation" reading and log it down (original gravity)
Then take "after" fermentation reading (final gravity)

Take the before from the after and X's by 1.25 this will give the %ABV

for example I have just kegged a beer that was

1.065 before
1.010 after

1.065-1.010 = 55 times by 1.25 = 6.8% ABV

you can get "more accurate" calculators here for instance (its not a linear scale) my example then comes out at 7.22%

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

Last edited: Nov 4, 2015
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6. ### DBKFunster

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Which is why I suggested just reading the % directly off the stem, assuming it is written on it, as this takes into account the non-linearity. But as you suggest it isn't an exact science otherwise you would have to take into account temperature.

My scale is: fall over after two pints - too strong. Still upright after ten, too weak. Anything in between is fine.

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7. ### LarrynwinFunster

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Quite a good chassis

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Thats all well and good, but your scale makes no reference to time of drink consumption

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