How do you convert alcohol percentage to proof?
Proof is a method of measuring the alcohol content of spirits. You calculate the proof of a spirits product by multiplying the percent of alcohol by volume by two (2). For example, a spirits product that has a 40% alcohol content by volume is 80 proof [40 multiplied by 2 = 80].
What proof is 70 alcohol?
70 proof simply means 35% ABV. It is most common for flavored spirits and some higher-proof liqueurs. 70 proof is on the lower end of the scale since proof only measured hard alcohol.
How do you make 90% alcohol?
take 785 ml of 90% v/v ethanol, or 730 ml of 95% v/v ethanol, or 707 ml of 99% v/v ethanol; add distilled or filtered water to make up a volume of 1 litre; leave to cool and top up with water again to bring the volume back to 1 litre (mixing water and ethanol together produces a reaction whereby volume is reduced).
Why is alcohol called proof?
The proof measurement harks back to 16th-century England, when the government would put an extra tax on “proof spirits”—that is, liquor that contained a certain higher amount of alcohol. … If the wet gunpowder could be lit, the alcohol was said to be a proof spirit and would therefore be taxed higher.
How much is 1 standard drink?
Standard drinks are a way to measure how much alcohol you drink. Drinks come in different sizes and some are stronger than others. They have different amounts of alcohol in them. A standard drink is always equal to 10 g of pure alcohol.
How many standard drinks can u drive an hour?
The general rule of thumb is that 2 standard drinks in the first hour will raise your BAC to 0.05%, and 1 standard per hour thereafter will maintain that level. To do a quick calculation of whether you are over 0.05% BAC, simply take the number of hours since your first drink and add 1 to it.