Features:Adopt the design without screw clasp, easy to disassemble and maintainSupport CW and CCW: switching power supply positive and negative pole, realize the CW and CCW of the pump headFlow direction: you can control the flow direction by the positive and negative connect.No valves and seals, convenient hose replacement , easy maintenanceThese Small Dosing Pump have the function of Self-primingWidely used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemicals, biotechnologySpecification:Color: greenFlow range: 10ml/min -90ml/minDc motor: 24VSilicone tube:3 * 5Flow rate:> 83ml/minMaterial of pump head: ABSPump tube: transparent silica gel tubePulsation: three rollers with small pulsationWeight: 82 g / 2.9 oz(approx.)Package list:1 x Peristaltic PumpNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..