This project, Plate Pouring III, is an automated device that fills petri dishes with a liquid solution called Agar. This is done in a sterile environment, not needing any human interaction for the mechanism to function. It safely removes the lid individually from petri dishes, injects the solution, reinserts the lid, and stacks the filled petri dishes.
Mechanical Engineering Design Project (MEMS 411)
Gebreselasse, Dagmawi T.; Rouse, Zach; and Cooperberg, Adam, "Plate Pouring III" (2015). Mechanical Engineering Design Project Class. 40.