Low-profile design easily fits into tight spaces, on shelves or on refrigerators. Can be stacked three high. Good for storing and dispensing stock solutions. Autoclave between uses to eliminate bacterial contamination. Convenient integral handgrip for safe easy transport. Polypropylene offers excellent chemical resistance. Closure size is 63 mm. Before autoclaving, just set cap or closure on top of container without engaging the threads. Polypropylene spigot and screw closure. NOTE: Dismount and disassemble spigot before autoclaving.