Compact vacuum pumps for filtration and fluid aspiration in microbiology and chemistry (sample preparation, waste water control and other analytical processes). Suitable for single and multiple filtrations. - Convenient, quick and simple to use due to the new top mounted power switch. - Whisper quiet and very low vibration. - Requires minimal benchtop space. - Maintenance-free drive system and proven long diaphragm life. - High chemical resistance (especially ME 1C), PTFE diaphragms and valves. - Optionally: manual control valve with dial gauge for a variable fine adjustment of the pumping speed. Compact vacuum pumps for filtration and fluid aspiration in microbiology and chemistry (sample preparation, waste water control and other analytical processes). Suitable for single and multiple filtrations. - Convenient, quick and simple to use due to the new top mounted power switch. - Whisper quiet and very low vibration. - Requires minimal benchtop space. - Maintenance-free drive system and proven long diaphragm life. - High chemical resistance (especially ME 1C), PTFE diaphragms and valves. - Optionally: manual control valve with dial gauge for a variable fine adjustment of the pumping speed.