The present invention relates to methods, kits and compositions for expansion of hematopoietic stemprogenitor cells and providing hematopoietic function to human patients in need thereof. The invention is characterised in that at least one counter-electrode is coupled in a capacitive manner to both of the outer electrodes on the inner side of the wall. A flexible bladder positioned within the chamber forms a cavity between the bladder and the outer wall of the chamber. A second harmonic generator is coupled to the oscillator cavity. The top of the screen board is printed with allocated colloidal phosphor until each mesh is coated fully.