In addition to life-saving cells that are indispensable for research, laboratories everywhere in the world now also produce around ten million tons of plastic waste per year, and the trend is rising sharply. The team around the Green Elephant founders Felix Wollenhaupt and Joel Eichmann is now countering this trend with CellScrew^®. The key is their revolutionary technology. In contrast to the cell culture flasks that have so far been made primarily from petroleum-based polystyrene, CellScrew^® consists of completely bio-based PLA (polylactide). In addition, a CellScrew^® system replaces up to 450 conventional cell culture flasks. This is made possible by an ingenious design that also radically simplifies handling in the laboratory: An Archimedean screw in the bottle, in combination with concentric cylinders, not only ensures continuous transport of the cell culture medium when stored on wheels, but also creates a compared to previous systems Huge internal surface - with 80 percent less material usage.
The jury was particularly enthusiastic about the consistency with which the Gießen start-up founders, who became plastics processors as career changers, took advantage of the advantages of the material. The high biocompatibility of PLA is just as important as the fact that the material can be processed excellently in 3D printing. And if CellScrew^® is not recycled or composted after single use for reasons of sterility, like conventional cell culture bottles, but is burned, the bio-based material has another advantage: Unlike fossil materials, hardly more greenhouse gases are released than the plants that served as raw materials , have previously taken from our present atmosphere.

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