thumb|right|187px|a "standard drink" does not necessarily reflect a typical serving size, such as seen here a standard drink is a notional drink that contains a specified amount of pure alcohol (ethanol). the standard drink is used in many countries to quantify alcohol intake. it is usually expressed as a certain measure of beer, wine, or spirits. one standard drink always contains the same amount of alcohol regardless of the container size or the type of alcoholic beverage, but does not necessarily correspond to the typical serving size in the country in which it is served. the standard drink varies significantly from country to country. for example, it is 10&nbsp;grams (12.7&nbsp;ml) of alcohol in australiaguide to labelling of alcoholic beverages and new zealand;alac - what's in a standard drink? in japan it is 25&nbsp;ml (19.75&nbsp;grams). in the united kingdom the term "standard drink" is not officially defined; instead a unit of alcohol is defined as 10&nbsp;ml. the number of units in a typical serving is printed on bottles; the advent of smartphones has led to the creation of apps which report the number of units contained in an alcoholic drink. the system is intended to inform people how much alcohol they drink, not to determine serving sizes. typical servings deliver 1â3 units.uk nhs:how long does alcohol stay in your blood?, reviewed 2013 in the united states the standard drink contains  of alcohol. this is approximately the amount of alcohol in a  glass of 5% abv beer, a  glass of 12% abv wine, or a  glass of a 40% abv (80 proof) spirit.rethinkingdrinking.niaaa.nih.gov, us nih web site:what's a "standard" drink? ==standard drinks as defined by various countries== the amount of alcohol is stated in the table in both grams and millilitres. the number of standard drinks contained in 500ml of beer of 5% abv (a typical large drink of beer) is stated for comparison.icap report 5 - "what is a 'standard drink'". url:. accessed on june 19, 2008. {| class="
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