Just rite 12938 Poly Carboy with Spigot, 5L, 83mm Cap, These polypropylene carboys feature large handles and base with molded grip allowing you to easily lift and pour. The material type and volume are printed on the outside of the carboy along with large, easy-to-read metric graduation marks that are certified to ±5% accuracy. The included polypropylene cap with platinum-cured silicone gasket provides a tight spill-proof seal. Constructed from USP Class VI, FDA grade PP resin, the translucent carboys provide good chemical compatibility when using with various reagents, buffers, and powders. Designed with internal threads and a hard stop to prevent over tightening and seal damage, leak-proof polypropylene spigots feature a standard internal lure taper to fit a male barb adapter. Large lever controls two flow rates, one for continuous locked flow and the other for a faster manual flow. Carboys are compatible with interchangeable adapters and spigot fittings. Recommended autoclave cycle: 15 PSI and 250 Degrees Fahrenheit for 20 minutes. Note: Length includes spigot.