12V 3*5 Dosing Pump DIY Peristaltic Tube Head For Aquarium Lab Chemical Analysis(green) Features: Adopt the design without screw clasp, easy to disassemble and maintain Support CW and CCW: switching power supply positive and negative pole, realize the CW and CCW of the pump head Flow direction: you can control the flow direction by the positive and negative connect. No valves and seals, convenient hose replacement , easy maintenance These Small Dosing Pump have the function of Self-priming Widely used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemicals, biotechnology Specification: Color: Black, white, green(Optional) Flow range: 10ml/min -90ml/min Dc motor: 12V Silicone tube:3 * 5 Flow rate:> 80ml/min Material of pump head: ABS Pump tube: transparent silica gel tube Pulsation: three rollers with small pulsation Weight: 83 g / 2.9 oz(approx.)   Package list: 1 x Peristaltic Pump Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store