Modified Abderhalden drying apparatus with a 57mm flat o-ring connection between the desiccant flask and the drying chamber to permit easy sample removal after drying. The drying chamber has an I.D. of 2” and is 8” long. The desiccant flask has a 4mm glass stopcock and a serrated connection for the vacuum source. The flask and condenser joints are 24/40. Complete apparatus consists of a drying chamber, desiccant flask, condenser, clamp and Viton o-ring.