alcoholkonzentrationen

Alcohol concentration refers to the amount of alcohol present in a substance, typically a liquid. It is commonly expressed as a percentage by volume or by mass. For alcoholic beverages, alcohol concentration is often measured in Alcohol By Volume (ABV), which indicates the number of milliliters of pure ethanol present in 100 milliliters of the beverage at 20 degrees Celsius. This is the most common unit used on product labels worldwide.

Another measure is Alcohol By Weight (ABW), which indicates the mass of pure ethanol in 100 grams of the beverage. While less common for consumer products, ABW can be used in certain industrial or scientific contexts. The relationship between ABV and ABW depends on the density of ethanol, which changes with temperature.

In the context of blood alcohol concentration (BAC), it measures the amount of alcohol in a person's bloodstream. BAC is usually expressed as a percentage by mass per volume, such as grams of alcohol per 100 milliliters of blood (g/dL) or grams of alcohol per 1000 milliliters of blood (g/L). BAC is a critical factor in determining the level of intoxication and is used in legal and medical settings. Factors such as body weight, sex, food consumption, and metabolism influence how alcohol concentration changes within the body.