2006-12-19 09:07:04 · 8 answers · asked by slickdriver187 1 in Food & Drink ➔ Beer, Wine & Spirits
In the definition current in the United States, the proof number is twice the percentage of the alcohol content measured by volume at a temperature of 60 °F (15.5 °C). Therefore "80 proof" is 40% alcohol by volume (most of the other 60% is water), and pure alcohol would be "200 proof".
This system dates to the 18th century, and perhaps earlier, when spirits were graded with gunpowder: A solution of water and alcohol "proved" itself when it could be poured on a Pinch of gunpowder and the wet powder could still be ignited. If it didn't ignite, the solution had too much water in it and the proof was considered low or "underproof".
A "proven" solution was defined as 100 degrees proof (100°). This has since been found to occur at 57.15% ethanol. This is still used as the British definition, although only the ABV system is used on bottles and sales. A simpler ratio to remember is 7:4, i.e. 70° proof is approximately 40% alcohol by volume. Thus pure alcohol is approximately 175 degrees proof (175°).
A hydrometer was traditionally used to measure the precise proof of a spirit, a practice which has gone through many formal changes.
2006-12-19 09:24:07 · answer #1 · answered by Bourbon Guy 2 · 3⤊ 0⤋
Alcohol Proof
2016-10-06 13:41:56 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Proof is percent x 2
So if it is 100 proof, then it is 50% alcohol.
2006-12-19 09:08:51 · answer #3 · answered by anniewalker 4 · 0⤊ 0⤋
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Percent proof is the actual percentage, by volume, of the drink that is alcohol. Degrees proof is higher. For example, 40% is 70 degrees proof, or something like that.
2016-04-04 06:17:47 · answer #4 · answered by Anonymous · 1⤊ 0⤋
90 proof = 45 percent alcohol and so on
2006-12-19 09:53:00 · answer #5 · answered by serrano_bill 2 · 1⤊ 0⤋
Proof is based on a scale of 200. Therefore, something that is 160 proof is actually 80 percent alchohol. If, you find something that strong it was probably brewed in someones backyard still.
2006-12-19 09:17:08 · answer #6 · answered by green3ch 6 · 1⤊ 0⤋
"Proof" is two times percent. Thus, something which is 60 percent alcohol will be 120 proof.
2006-12-19 09:14:24 · answer #7 · answered by byhisello99 5 · 1⤊ 0⤋
What Is Proof
2016-12-09 01:12:51 · answer #8 · answered by Anonymous · 0⤊ 0⤋
To give ones proof you must ask solely the question of what is proof?
2014-02-22 15:44:17 · answer #9 · answered by Nick 2 · 0⤊ 3⤋
Proof = %*2.
2006-12-19 09:19:54 · answer #10 · answered by AustinoBambino 2 · 1⤊ 3⤋