Peristaltic - Roller Pumps

Peristaltic pumps are the most common type of pump used in laboratories. Peristaltic pumps are positive displacement pumps that use a flexible tube's forward and backward motion to move fluids.

Peristaltic pumps have an output tube wrapped around a drive roller. Rollers rotate at varying speeds to control flow rate, forcing fluid through tubes. Due to the tube's flexibility, it can be bent into curves and flexed to change direction without damaging its internal structure.

More about peristaltic pump

A peristaltic pump (also known as a roller pump) is a type of positive displacement pump that works on the principle of peristalsis. Peristalsis is the rhythmic contraction and relaxation of muscles that move fluids through tubes. A peristaltic pump consists of a flexible tube that is squeezed by rotating rollers against a rigid casing. As the rollers move along the tube, they create a vacuum that draws fluid into the tube and pushes it out at the other end. A peristaltic pump can pump a wide variety of fluids, such as viscous liquids or gases. It is useful for laboratory applications that require low-pressure transfers of fluids, such as biochemistry analyzers, colter counters, electrolyte analyzers, etc.. Some advantages of peristaltic pumps are that they are easy to use, self-priming, reversible, and prevent cross-contamination between fluids and tubing. Some disadvantages are that they have limited flow rates, pressure ranges, and tube life.