Numerous tests are conducted in hospitals based on cell analysis. It may be counting blood cells to assess a patient’s general condition, or examining blood samples from cancer patients to monitor the presence of tumour cells, which indicates that a tumour has metastasized. I want to develop and apply a new ultrasound based method that allows antibody and size independent sorting of cells. By mapping a cell’s acoustic properties, I can find out under what conditions the iso-acoustophoresis is sufficient cell-specific for identifying and sorting cells of different types. If so, the separations will be performed with high purity, high velocity and minimal impact on the cells.