By depressing the side lever the entire contents can be dispensed rapidly. Nanbei Instruments Lab Use 2ml/10ml/25ml Pipette Pump Manual Micro Pipette Filler Pump Buy Lab Pipette Pup, Wide Applicability Rapidly Dispensed Pipette Pup... [EFFORTLESS ONE-HANDED OPERATION] - The Pipette Pump Filler offers effortless one-handed operation, simplifying your pipetting tasks. 1., Easy operation, this Pipette Pump is easy to operate by one hand 2., Rotation of the thumb wheel draws or dispenses the liquid with and ease., 3., By depressing the side lever the entire contents can be dispensed rapidly., 4., Wide applicability, Accepts glass and plastic pipettes., 5., Pipette Pump for Pipettes up to 2 ml Spec: Features: Easy operation, this Pipette Pump is easy to operate by one hand Rotation of the thumb wheel draws or dispenses the liquid with and ease. Volumetric Pipette With Pump [ACCURATE AND PRECISE LIQUID DISPENSING] - Rotate the thumb wheel with ease to achieve accurate and precise liquid dispensing for reliable results. One-handed Pipette Pump For Lab Glass Pipette, 3 Pieces 10ML 5ML 2ML Glass Graduated Pipettes Transfer Dropper For Liquid Essential Oil Glass And Plastic Pipette Pump [UP TO 2 ML CAPACITY] - With a capacity of up to 2 ml, this Pipette Pump Filler is ideal for a range of pipetting tasks.