Vacuum filtration is one of the most common applications used for sample preparation in chemistry, microbiology, waste water control and other analytical processes. The compact ME1 and ME1C diaphragm pumps offer a high performance and easy-to-use solution which is perfect for both single and multiple filtrations. These pumps provide a well-proven and extraordinary long diaphragm life time in excess of 15,000 operating hours. They are whisper quiet with low vibration.