Carboy

A carboy, also known as a demijohn or a lady jeanne, is a rigid container with a typical capacity of 4 to 60 litres (1 to 16 US gal).

[7] Demijohn originally referred to any glass vessel with a large body and small neck, enclosed in wickerwork.

A 15 US gal (57 L) carboy is usually called a demijohn (in the Philippines, dama juana[10]).

In brewing, a carboy or demijohn is a glass or plastic vessel used in fermenting beverages such as wine, mead, cider, perry, and beer.

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.

Large plastic bottles for a water dispenser
A 25 L ( 6 + 1 ⁄ 2 US gal) glass carboy acting as a fermentation vessel for beer. It is fitted with a fermentation lock .
A Bulgarian demijohn ( damadzhana )