Patent ID: 7217352

Claim:
An electrophoresis device comprising: a plurality of capillaries each being filled with a separation medium for sample separation, each capillary having an injecting end portion for introducing a sample and a light illumination portion capable of being illuminated with an excitation light; a power source device capable of applying a voltage to a current-carrying path extending at least between the injecting end portion and the light illumination portion of each of the plurality of capillaries; a fluorescence excitation device capable of illuminating the light illumination portion of each of the plurality of capillaries with light; a light detection device capable of detecting light emitted from the light illumination portion of each of the plurality of capillaries; a fluid container capable of holding a fluid into which the injecting end portions of each of the plurality of capillaries are immersed, the fluid container being provided with a fluid resistance member; and a container transportation device capable of transporting the fluid container; wherein, when a fluid is present in the fluid container, the fluid resistance member equalizes a height of the surface of the fluid, having contact with the injecting end portions of the plurality of capillaries.