Automobile emissions testing is required in all or part of 33 states to help maintain the federal air quality standard. Areas that were in moderate nonattainment or worse for ozone in 1990 are included in Ohio's E-Check program. These areas include the metropolitan statistical areas of Cleveland and Akron.
Freebase(0.00 / 0 votes)Rate this definition: Alcohol proof. Alcohol proof is a measure of how much alcohol is contained in an alcoholic beverage. The term was originally used in the United Kingdom and was defined as 7/4 times the alcohol by volume.
Proof is an equation that even someone like me, who earned a C- in remedial math, can do: Double the number listed as the alcohol by volume on the bottle. A spirit with 40 percent alcohol by volume, therefore, is 80 proof. But as easy as the number is to calculate, the concept of proof is more challenging. Most people have a shaky grasp of the alcohol content in their beverages.