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.
Grain alcohol or ethanol is available in different proofs. A grain alcoholâs proof is its ratio of alcohol to water. For example, 190 proof is 95% ethanol and 5% water. When looking at a bottle of alcohol in the liquor store you will see that it says, â__ proofâ. The proof is twice that of the percentage of alcohol. So, 80 proof would mean that the bottle contains 40% ethanol.