Quart

The quart^[1] is an imperial and US customary unit of volume equal to a quarter of a gallon. Since gallons of various sizes have historically been in use, quarts of various sizes have also existed. Three of these quarts remain in current use, all approximately equal to one litre.

Winchester quart

A Winchester quart is an archaic measure,^[2] roughly equal to 2 Imperial quarts or 2.25 litres. The 2.5 litre bottles, in which laboratory chemicals are supplied, are sometimes referred to as Winchester quart bottles although they contain slightly more than a traditional Winchester quart.

Notes and references

^ The term comes from the Latin quartus (meaning one-quarter) via the French quart. However, although the French word quart has the same root, it frequently means something entirely different. In Canadian French in particular, the quart is called pinte whilst the pint is called chopine.
^ Trading Standards - Weights and Measures of the City of Winchester

[1] The term comes from the Latin quartus (meaning one-quarter) via the French quart. However, although the French word quart has the same root, it frequently means something entirely different. In Canadian French in particular, the quart is called pinte whilst the pint is called chopine.

[2] Trading Standards - Weights and Measures of the City of Winchester

[1]