Patent ID: 8062592

Claim:
A capillary electrophoresis apparatus comprising: (a) an auto sampler configured to transport a sample tray to an injection side of a capillary in accordance with a predetermined procedure, the sample tray including a sample plate having a plurality of wells for holding samples, wherein the sample tray is mounted at a predetermined position on a table of the auto sampler; (b) a cooling unit configured to cool the sample plate of the sample tray, wherein, the cooling unit is provided in the sample tray; (c) a driving circuit configured to drive the cooling unit; (d) a sensor configured to detect a temperature of a space in the sample tray that accommodates the sample plate having the plurality of wells; (e) a thermal control circuit configured to control a drive of the driving circuit in accordance with the temperature detected by the sensor; (f) a signal line connecting the sensor and the thermal control circuit; and (g) a power cable connecting the driving circuit and the cooling unit.