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Capillary electrophoresis is a separation technique in which charged species are separated, based on charge and size, by their different rates of migration in an electric field. The capillary is made of negatively charged fused silica inner wall which forms an electrical double layer with cations in the running buffer. These cations in the electrical double layer move towards the negative cathode and hence the overall direction of flow also known as the electroosmotic movement is towards the cathode. The s
