Features: <br>The pump head is of simple disassembly type for easy cleaning and maintenance <br>Flow direction: you can control the flow direction by the positive and negative connect. <br>No valves and seals for convenient hose replacement <br>These Small Dosing Pump have the function of Self-priming <br>Widely used in the field of experimental, biochemical analysis, pharmaceuticals, fine chemicals, biotechnology <br> <br>Specification: <br>Applicable power supply: DC6V/12V/24V(Optional) <br>Working environment: temperature 0 to 40, relative humidity of < 80% <br>Medium flow direction: the flow direction of peristaltic pump depends on the positive and negative connection of power supply <br>Flow range: 0-150ml/min(without speed regulating circuit) <br>Motor size: diameter 27.5mm, height 50(mm) <br>Pump head size: diameter 31.7mm,height 20.1(mm) <br>Standard pump pipe: inner diameter 2 * outer diameter 4(mm) (pump pipes of different sizes can be changed according to flow requirements) <br>Mounting hole spacing: 47mm <br>Weight: 106 g / 3.7 oz(approx.) <br> <br><br>Package list: <br>1 x Peristaltic Pump <br><br><br>Note:Before using acid-base medium, it is better to soak the pump pipe for 24 hours