Patent ID: 8888980

Claim:
An electrophoresis apparatus that applies voltage from electrodes that are provided in a capillary flow channel and causes component separation by performing electrophoresis on a specimen that is injected into the capillary flow channel, the electrophoresis apparatus comprising a controller including: a physical quantity acquisition unit that, with a migration solution and a specimen injected inside the capillary flow channel, is configured to acquire an electrical quantity that occurs in the capillary flow channel at a specified time when voltage is being applied to the electrodes; a physical quantity determination unit that is configured to determine whether or not the electrical quantity is within a specified range; a cleaning determination unit that, when the physical quantity determination unit determines that the electrical quantity is not within the specified range, is configured to output a cleaning signal for cleaning the capillary flow channel; and a replacement unit that is configured to output a replacement signal for replacing a component of the capillary flow channel; wherein the controller is programmed to control: the physical quantity acquisition unit to acquire the electrical quantity at every specified time when voltage is being applied to the electrodes; the physical quantity determination unit to determine whether or not the electrical quantity is within the specified range every time that the physical quantity acquisition unit acquires the electrical quantity; the cleaning determination unit to output the cleaning signal every time the physical quantity determination unit determines that the electric quantity is not within the specified range; and the replacement unit to output the replacement signal without the cleaning signal being outputted when the number of times that the physical quantity determination unit continuously determines that the electrical quantity is not within the specified range reaches a first specified number of times.