The Tube-based Vacuum Sublimation Unit provides the ability to purify organic volatile compounds by vacuum sublimation (fractionate evaporation and re-crystallization), both for sublimable compounds and liquid phase compounds for application in organic opto-electronics (e.g. OLEDs, organic photovoltaics) or nanotechnology. The maximum load of material to be purified is ranges between 5 g and 10 g depending on material to be purified. The system is designed for application in the field of R&D. The setup is most flexible for R&D applications and easy to handle.