The manufacturer of the Buchi Rotavapor R-151 Rotary Evaporator is Buchi Corporation. The Buchi R-151 is suitable for the concentration of solvent quantities and for a large number of additional applications. Depending on the glass configuration and accessories being used, the Buchi R-151 rotavapor can be used for powder and granule drying, reflux reactions, recrystallization, and solid/liquid extractions, among others. The drive unit has an enclosed induction motor with independent cooling fan. The variable speed control on the Buchi R-151 can be set from 15-140 rpm. The pre-owned products will be thoroughly cleaned and fully tested to perform at manufacturer specifications before shipping.