Easy connect, wide mouth condensation flask - provides fast, easy solvent disposal and is dishwasher safe. AES Systems have improved user interface with scrolling feature - provides easier, faster programming. Fully automatic bleeder valve - assures complete sample protection from bumping. Oil-free, Teflon coated vacuum pump - maintenance free and eliminates messy oil changes and disposal problems. Three user selectable drying rates; low, medium and high - optimizes the concentrating and drying process. Teflon coated, deep concentration chamber - accommodates samples in large sizes containers/allows for processing of large batch runs of smaller samples. Telfon coating protects the chamber from harsh solvents for years of trouble free service. Corrosion resistant vapor path - provides long instrument life and complete protection from solvents.