Abstract: A peristaltic pumping device comprises a cartridge which is releasably engagable in a circular socket of a peristaltic pump. The cartridge has a carrier having an annular series of peripheral rollers, the carrier being rotated by an output rotary assembly of the pump through a drive shaft. A plurality of tubes are located to pass through the cartridge in engagement with the rollers which effect pumping of liquids through the tubes by compression of successive parts of the tubes by the rollers as the carrier rotates thereby inducing the liquid flows therethrough by peristaltic action.