The V-855 Vacuum Controller is a universal unit for the display, adjustment and control of all vacuum systems. It is completely automated with a 4" VGA LCD-display to control the vacuum by a valve or by the new speed control technology with the vacuum pump V-700/710. You can select among functions such as constant vacuum, pressure gradients, timer function, fully automatic distillation (EasyVac), LabVac and a comprehensive solvent library. Twenty individual programs can be stored. The ready to use controller includes an aeration valve and pressure sensor.