The flask is fabricated with an ACE 45/50 joint and is available in either 50 or 100ml capacity. Head has three 14/20 outer joints surrounding the 19/38 center opening. 8038 Trubore bearing. The agitator is a solid shaft with the blades shaped in the form of a half propeller. Rounded blades permit close tolerance with the flask bottom. The shaft is inserted in the bearing from underneath; design of the agitator is limited only by joint dimensions. The analytical still head with stopcock serves as a reflux condenser.