This is a versatile unit that can be used as a solvent recovery still for azeotropic separations of solvents, either heavier or lighter than water

As a solvent recovery unit, the lower 4mm PTFE double oblique stopcock permits total return to flask, total takeoff, and total storage in the 500mL graduated receiver. The bottom exit extends away from the distilling flask for easier takeoff. The 2mm bore PTFE stopcock at the top has tubing that will accept a septum to permit use of a syringe for extracting smaller samples, as needed, while avoiding air contact. Fabricated from borosilicated glass.