Where two adjoining workplaces are handling different vacuum evaporation or drying processes, quite often each workplace has its own dedicated vacuum system. However, this solution can be both expensive and waste valuable bench space. This is where the Chemistry Vacuum Pumping Unit PC 511 NT provides a significant advantage. A single pumping unit with two independent vacuum ports, it combines two laboratory vacuum systems in one compact solution. The first vacuum port is controlled by a solenoid valve, actuated by an electronic vacuum controller. The second port has a manual flow control valve. Both valve modules have integrated non-return valves to prevent cross contamination and interference. Therefore, it is now possible to evaporate a low-boiling solvent in a rotary evaporator, whilst simultaneously running a vacuum filtration.