Adapter permits sublimation directly in any reaction vessel having an standard taper outer joint; simply remove condenser or other apparatus from joint, insert adapter and begin. Adapter has two components, the cold finger condenser and vacuum adapter. Adapter has a #18 Chem-Thread to allow for the vertical positioning of the cold finger in flasks from 250 to 1000mL. Vacuum is controlled via a 2mm PTFE stopcock. Adapter joint sizes are medium length, but can be used in full length joints.