The biotech firm Prionics was developing a test procedure for detecting prion diseases (e.g. BSE) in animals. Test preparations involved placing tissue samples in the lab mixer PrioCLIP™ along with a buffer solution and homogenising them. The mixer container had to be extremely impervious and operable with one hand. Zühlke was commissioned to develop the new PrioCLIP™ to the massproduction stage and to design and commission a manual assembly device.
Having defined the requirements, the team methodically evaluated the draft designs and tested them with prototypes. The design of the mixing rod utilised a speed of 20,000 rpm and made for a more dynamic ascent of the rod. Thanks to this change, lateral guidance was sufficient and lowered the frictional wear substantially. At the critical opening in the container cover, the rod had a turbine effect, drawing the outside air into the container and sealing it in the process. Despite the improved functionality, the number of components was reduced from eight to three. This allowed simplified assembly with a manual assembly device, which was constructed and put into operation.