A carboy, also known as a demijohn or a lady jeanne, is a rigid container with a typical capacity of . Carboys are primarily used for transporting liquids, often water or chemicals. They are also used for in-home fermentation of beverages, often beer or wine.

History and etymology

The word ''

carboy A carboy, also known as a demijohn or a lady jeanne, is a rigid container with a typical capacity of . Carboys are primarily used for transporting liquids, often water or chemicals. They are also used for in-home fermentation of beverages, ...

'' is from the

Persian Persian may refer to: * People and things from Iran, historically called ''Persia'' in the English language ** Persians, the majority ethnic group in Iran, not to be conflated with the Iranic peoples ** Persian language, an Iranian language of the ...

''qarābah'' ( قرابه), from

Middle Persian Middle Persian or Pahlavi, also known by its endonym Pārsīk or Pārsīg () in its later form, is a Western Middle Iranian language which became the literary language of the Sasanian Empire. For some time after the Sasanian collapse, Middle ...

''Karāvah''.

Arabic Arabic (, ' ; , ' or ) is a Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C. E.Watson; Walter ...

also borrowed it as ''qarrāba'', meaning "big

jug A jug is a type of container commonly used to hold liquids. It has an opening, sometimes narrow, from which to pour or drink, and has a handle, and often a pouring lip. Jugs throughout history have been made of metal, and ceramic, or glass, and ...

". The Spanish-language term is ''garrafa''. ''

Demijohn A carboy, also known as a demijohn or a lady jeanne, is a rigid container with a typical capacity of . Carboys are primarily used for transporting liquids, often water or chemicals. They are also used for in-home fermentation of beverages, ...

'' originally referred to any glass vessel with a large body and small neck, enclosed in wickerwork. The word presumably comes from the French ''dame-jeanne'', literally "Lady Jane", as a popular appellation; this word is first attested in France in the 17th century. In

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...

it is called ''damigiana'', most probably derived from French. In some Spanish-speaking countries such as Argentina, it is also referred to as ''damajuana''. An alternative etymology derives it from the name of a

town,

Damghan Damghan ( fa, دامغان, translit=Dāmghān) is the capital of Damghan County, Semnan Province, Iran. At the 2006 census, its population was 57,331, in 15,849 families. It is situated east of Tehran on the high-road to Mashad, at an elevat ...

, but there is no evidence for this.

Size

Carboys come in various volumes ranging from . The term carboy itself usually refers to a carboy, unless otherwise noted. A carboy is sometimes called a

. A carboy is usually called a demijohn (in the Philippines, ''dama juana''Ocampo, Ambeth R. (August 9, 2006) ''

Philippine Daily Inquirer The ''Philippine Daily Inquirer'' (''PDI''), or simply the ''Inquirer'', is an English-language newspaper in the Philippines. Founded in 1985, it is often regarded as the Philippines' newspaper of record. The newspaper is the most awarded br ...

''
Tanduay
. p. 13.). In Britain, "demijohn" refers to a glass brewing vessel.

Brewing

In brewing, a carboy or demijohn is a glass or plastic vessel used in fermenting beverages such as

wine Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are m ...

, mead, cider, perry, and beer. Usually it is fitted with a rubber stopper (plug), stopper and a fermentation lock to prevent bacteria and oxygen from entering during the fermentation process. During the homebrewing process, a primary carboy is used for fermentation. Once primary fermentation is complete, the beer is either transferred to a secondary carboy for conditioning or it can be transferred directly to bottles for conditioning. (This process of transferring is usually called racking.)

Laboratory

In modern laboratories, carboys are usually made of plastic, though traditionally were (and still are in many university settings) made of ferric glass or other shatter-resistant glasses immune to acid corrosion or halide staining common in older plastic formulations. They are used for storing large quantities of liquids, such as solvents or deionised water. In these applications, a tap may be included for dispensing. Carboys are also used to collect and store waste solvents. Collecting waste solvents in plastic carboys is preferable to reusing glass Winchester (bottle), Winchesters due to the lesser chance of breakage if a solution is placed in an incorrectly labeled carboy. Polypropylene carboys are also commonly used in laboratories to transfer purified water. They are typically filled at the top and have a spigot at the bottom for dispensing.

References

External links