A media dispenser or a culture media dispenser is a device for repeatedly delivering small fixed volumes of liquid such as a laboratory growth medium like molten agar or caustic or volatile solvents l
Syringe pump
Sterile media dispenser with electromagnetic inductive pump manufactured by Tritech Research
A bottle top media dispenser
A pump is a device that moves fluids, or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy.
A small, electrically powered pump
A large, electrically driven pump for waterworks near the Hengsteysee, Germany
Antique "pitcher" pump (c. 1924) at the Colored School in Alapaha, Georgia, US