The Büchi RotaVapor® R-210 Professional is the basic model (E1400A) with integrated Vacuum Controller V-855 that offers easy-to-read digital display of rotation speed and vapor temperature (see E1420A for more details). Vacuum Controller V-855 features pressure gradients, automatic distillation down to dryness, repeat function, and more. Stores up to fifteen distillation programs. Choose from seven glass assemblies (A, V, C, S, E, BV or CR). Listed glassware assembly has ST 24/40 joints but is also available with ST 29/42 joints, upon request. Regulation and display of vacuum pressure ensures optimal distillation. For 50 ml to 4,000 ml flasks. Digital heating baths (20°C to 180°C) are optional (see E1420B). Motorized Quick-action Jack easily raises and lowers glassware. Rotation can be started/ stopped, and glassware can be raised/lowered automatically with Vacuum Controller V-855. The sealing system is made of PTFE and glass, which lasts significantly longer than previous vacuum seals. These models are also available with an optional plastic coating on all glass parts except the evaporating flask. There are a variety of packages available that pair baths and controllers, as well as other accessories, to this model. Please inquire. Specifications: Rotation Speed: 20 - 280 rpm, Temperature Range: 20° to 180° C, Accuracy: ±1°, Bath Size: 4 Lt, Weight: 48 Lbs.