WINE BOTTLES.

DO YOU KNOW WHY WINE BOTTLES ARE 750 ml...?

Wine bottles are generally 750 ml and not one litre (1,000 ml). Where does this specification come from?

The capacity of a wine bottle was standardized in the 19th century.

The English unit of volume was the "imperial gallon" which was equivalent to 4.54609 liters.

To simplify the conversion calculations, they transported Bordeaux wine in 225-litre barrels, i.e. exactly 50 gallons, corresponding to 300 bottles of 750 ml. 

Since the calculation was easier, they adopted the idea that a barrel = 50 gallons = 300 bottles. In this way, a gallon corresponded to 6 bottles. That is why even today, wine boxes usually contain 6 or 12 bottles.