Bonbonnes

Bonbonnes are large bottles used for storing and transporting liquids. In English, the term is often synonymous with carboy (or demijohn in some contexts). They are typically made of glass or high-density polyethylene and feature a wide body that tapers to a narrow neck. Closures vary and can include glass or rubber stoppers, corks, screw caps, or fitted lids; many bonbonnes also have an integrated handle or shoulder for carrying.

Sizes vary widely, with common capacities from about 5 liters to more than 60 liters. Domestic wine and water carboys are typically in the 18 to 23 liter (5 to 6 gallon) range. The choice of material influences weight, chemical compatibility, and durability: glass offers inertness and clarity, while plastics provide lighter weight and impact resistance but may require compatibility considerations for certain liquids.

Uses and contexts include brewing, winemaking, and home fermentation, where bonbonnes provide a sealed environment for maturation and aging. In laboratory and industrial settings, glass or plastic bonbonnes are employed for storing reagents, solvents, and other liquids, often with appropriate labeling and secondary containment. Household applications include large-volume water storage or transporting liquids for culinary or caregiving purposes.

Care and safety considerations emphasize handling fragile glass versions with care to avoid cracks or shards, avoiding thermal shock, and cleaning thoroughly between uses to prevent contamination. Plastics should be inspected for compatibility with stored liquids and any leach risk. Store bonbonnes upright and secure closures to prevent leaks or spills.

Regional terminology and usage vary: in Francophone areas the term bonbonne is common, while English speakers may prefer carboy or demijohn. See also carboy, demijohn, and jerrycan.