Automatic analyzer

A liquid discharging method for an automatic analyzer having:

• a suction nozzle,
• a suction syringe,
• a channel which connects the suction nozzle and the suction syringe,
• a flow cell which is arranged in the middle of the channel,
• a detector for sample analysis which is arranged in the flow cell,
• a reservoir unit having a drive mechanism to move the reservoir unit, and the reservoir unit separately holds a reaction vessel which stores a reaction solution, a liquid vessel which stores a liquid, and, a cleaning tank,
• a diluting fluid supplying nozzle which supplies a diluting fluid to the liquid vessel,
• a diluting syringe connected to supply the diluting fluid to the diluting fluid supplying nozzle, and
• a dumping channel, connected to each of the liquid vessel and the cleaning tank, for disposing liquid remaining in the liquid vessel and the cleaning tank, the method comprising:
• driving the suction syringe to transfer the reaction solution in the reaction vessel into the flow cell via the suction nozzle;
• driving the suction syringe to transfer the fluid in the liquid vessel into the flow cell via the suction nozzle;
• driving the diluting syringe to supply the diluting fluid to the liquid vessel via the diluting fluid supplying nozzle to dilute the liquid remaining in the liquid vessel;
• driving the suction syringe to suck the diluted liquid remaining in the liquid vessel via the suction nozzle;
• driving the suction syringe to discharge the sucked remaining diluted liquid via the suction nozzle into the cleaning tank and disposing of the sucked remaining diluted liquid in the cleaning tank via the dumping channel, and
• wherein the controller is further programmed to control the drive mechanism to move the reservoir unit such that the reservoir unit rotates with respect to the suction nozzle and is driven upwards to the suction nozzle.