A grease-free, two-piece sublimation apparatus consisting of an upper water cooled condenser and lower vessel to hold the material to be sublimed. The sublimate collects on the lower end of the condenser which has a flat bottom. Condenser is constructed using a grease-free, threaded valve. Connection of the condenser and lower vessel via an o-ring joint enables the two parts to be gently separated for maximum product recovery. Complete apparatus consists of the cold finger condenser, lower vessel, Viton o-ring and stainless steel pinchclamp. Available in two sizes with the capacity listed being that below the bottom of the cold finger.
**DESIGNED AND DEVELOPED BY DR. WILLIAM DAILEY, UNIVERSITY OF PENNSYLVANIA, PHILADELPHIA, PA