Bel-Art Autoclavable Polypropylene Carboy with Spigot; 20 Liters (5.3 Gallons) (F11846-0050) Rugged polypropylene carboys have a molded-in bung to accept the easy-to-use polypropylene spigot An 83mm polypropylene buttress screw cap includes a built-in silicone gasket for positive seal Excellent chemical resistance, are ideal for storing and dispensing double distilled water, buffers and salts, and have large handles that help with transport Steam autoclavable 121degree C (250 degree F), when autoclaving, do not engage cap threads