One half of the proof is the percentage. 100 proof alcohol is 50% or half alcohol.
Hydrometers are commonly used to assess or determine actual proof of an alcoholic beverage. One half the proof is the alcohol content. For example, 80 proof whiskey is 40% alcohol. The alcohol conent in blood is measured by analyzing a sample of blood. More commonly, it is estimated (not measured) by using an alcohol breath testing machine, one brand of which is the Breathalyzer.
80 proof liquor contains 40% alcohol by volume. This means that 80 proof liquor is 40% alcohol and 60% other ingredients (usually water).
To find the percentage of alcohol, you cut the proof in half. So 60-proof vodka would be 30% alcohol.
80 proof.
'Proof' is a unit of measurement equal to 1 half of 1 percent. Therefore, 150 proof is 75% Alcohol by Volume (although at this point, you're more likely drinking moonshine or grain alcohol and not whiskey)
Check the label for the 'proof' and divide it in half.
Bacardi 151 is a hundred and one proof! And its rum.
the higher the proof the stronger - more alcohol - there is. In the UK 70 dgree proof was the standard strength of whiskey - 40% alcohol. 100 proof is 57.1% alcohol. 175 proof is 100% alcohol. In the USA it is different. 100 proof would be 50% alcohol, 70 proof would be 35% alcohol. 200proof would be 100% alcohol. ie double
proof is double the alcohol percentage. 40% alcohol= 80 proof
the proof is used to tell you how much alcohol is in it. 100 proof is about 50% alcohol so jsut divide the proof by 2 the higer the proof the more alcohol
You can buy 190 proof grain alcohol in Maryland. In West Virginia and Ohio, you can only buy 150 proof grain alcohol. I know in Maryland you buy either Everclear or Gemclear (generic version of everclear but same proof). The difference in price is about $5 per half gallon.