Posted by **DEEK** on Monday, May 23, 2011 at 12:11am.

when they talk about proof in regards to alcohol. how is proof determined. how do you proof alcohol.

- science -
**drwls**, Monday, May 23, 2011 at 3:58am
The "proof" of alcohol is a number, not something that somebody proves.

Proof is twice the ethyl alcohol percent by mass. A 94 proof alcoholic beverage, such as Beefeater gin, is 47% alcohol

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