Lab Carboys

Lab carboys are typically made from glass, polyethylene (HDPE/LDPE), or polypropylene. Glass is chemically inert and scratch-resistant but heavier and breakable; HDPE/LDPE and polypropylene are lighter, impact-resistant, and better for outdoor or rough handling but can absorb some solvents and may permeate gases over time

Pick capacity based on batch volume with some headspace for mixing—common sizes range from 1 L to 20 L and larger. Choose neck size and closure type to match fittings, tubing, or pumps: wider necks ease pouring and cleaning, while narrow necks use standard caps, bungs, or sealed fittings

Check the carboy material's chemical compatibility chart for your liquids—glass is broadly compatible with acids and solvents, while plastics vary (HDPE handles many aqueous chemicals but not strong oxidizers or some solvents). Also verify temperature limits; most plastic carboys are rated for room to moderate temperatures, while borosilicate glass tolerates higher temperatures and thermal shock better

Clean with appropriate detergents and brushes sized for the carboy, rinse thoroughly, and use compatible disinfectants or autoclaving if the material permits (borosilicate glass can usually be autoclaved; most plastics cannot). Avoid abrasive cleaners on plastic, and always follow manufacturer guidance for sterilization methods and temperatures

Look for molded handles or secondary grip points, valve or spigot-compatible fittings, and compatible pump adapters. A stable base reduces tipping; graduated markings help measure volume; and a wide mouth or port makes filling and cleaning easier

Yes—use carboys constructed from materials appropriate for your chemicals, label contents and hazards clearly, store with secondary containment if holding hazardous liquids, and follow institutional or regulatory requirements for pressure relief, grounding for flammable liquids, and transport within the facility

Lab carboys typically range from budget options under $50 to specialty glass or large-volume units costing over $100; higher prices often reflect material (borosilicate glass vs. generic plastic), larger capacity, and added features like fittings or reinforced handles