Using rubber balloons, we made a prototype of a simple pipette based on the mechanical instability of spherical membranes. We performed measurements on the fabricated system and developed computer code to predict what would happen if multiple balloons were connected. We pipetted the volumes of the balloons, initially without significant success, but that changed when we upgraded and used the new dispensing method. By using more professional equipment, our simple and robust pipette concept be used in everyday life and industrial liquid dispensing with greater precision.
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