Proof spirit refers to the strength of alcohol in a solution, commonly used in beverages and pharmacy.
Definition of Proof spirit
- Proof spirit contains 28 percent alcohol by weight or 57.1 percent alcohol by volume.
- In the U.S., the formula for proof is:
Proof = 2 × Alcohol by Volume (ABV)
So, 50 percent ABV = 100 proof.
Advertisements
Dilution Calculations
Pharmacists may need to dilute alcohol to reach a specific proof using Alligation or proportional dilution.
Example: To dilute 95 percent alcohol (190 proof) to 40 percent alcohol (80 proof), calculate how much water to add using simple dilution methods.
