Waterra - Peristaltic Groundwater Sampling Pump for Shallow Use

Waterra carries the Fieldpro Peristaltic Groundwater Sampling Pump because it is quite easy to use but peristaltic pump lift is more limited than other devices. They work by reducing the pressure in the sample tubing. Water rises up the tubing to equalize the pressure differential because the bottom end of the tube is open. The maximum theoretical vacuum that a peristaltic pump can create is -1 atmosphere, which at sea level is equal to 14.7 psi and equivalent to a 32 foot water column. In reality, the maximum lift the best peristaltic pumps generate in the field is about 27 feet (8.2 m) at sea level and this will decrease with increasing elevation.