Squibb-type pear-shaped funnel with a ST joint and stopcock. Plain stem, but may be used with Cat.No. 186-179800 Universal Adapter. Note stem diameter for a proper fit when using this adapter. Replacement stopper is listed under Cat.No.186-850100. Cat.No. 186-636031 series funnels are supplied without a stopper. With an 1:5 taper PTFE stopcock plug.