12.23 Hand-Operated Peristaltic Pump

The hand-operated peristaltic pump is a very reliable apparatus that is used for pumping of gasses and fluids. The pump used is a simple, but very durable, peristaltic pump with three pressure rollers. The bearings of the drive shaft and the pressure rollers are waterresistant. The pump can deliver a pump pressure of 3 bar (thus also suitable for use with in-line filters) and an underpressure maximum of 1 bar. It is a selfpriming pump. Even when the pump is out of use the pump tube is completely pressed by at least one roller. Fluid and gas can not flow back. Using the hand-operated peristaltic pump water can be pumped from a depth of up to 9.5 meter. The hand-operated peristaltic pump is fitted with a handle with bearings that  operates very light. The stainless steel monopod stand has been fitted with a press-down rim that allows you to press the stand into the soil easily for support. A 6 x 10 mm silicon tube is most suitable for groundwater sampling.