In this project we aim to develop a semen quality test system based on a lab-on-a-chip. Since an important quality parameter of semen is the concentration of spermatozoa, we focus on counting the spermatozoa by using impedance measurements in a microchannel. However, semen contains also an interfering concentration of leucocytes that should be excluded from the cell count. By a proper chip design and a sensitive measurement set-up, it was possibl
