Rugged carboys are 21 CFR 177.1520 compliant for direct contact with foods and beverages, and are USP Class VI certified for the demands of the biotechnology and pharmaceutical industries. Ideal for storing and dispensing large batches of culture media, distilled water and other solutions, they have excellent chemical resistance and large handles that help with transport. All components are FDA-grade polypropylene construction and are steam autoclavable at 121°C (250°F). When autoclaving, do not engage cap threads. The 83mm screw cap includes a built-in thermo-plastic elastomer washer for positive seal. Molded-in bung accepts the easy-to-use spigot and is located low on carboy for more complete drainage.