| 摘要 |
<p>An automatic analyzer includes a wastewater suction device which causes a suction nozzle to suction a reaction wastewater from each of plural reaction vessels transferred to a disposal position, transfers plural suction nozzles to a cleaning position to cause the suction nozzles to suction a cleaning liquid, and thereby cleans the plural suction nozzles. The wastewater suction device (20) includes a pressure sensor (23) that is arranged near the suction nozzle at a pipe (22) which guides a negative pressure for suction to each of the suction nozzles (21b) to detect pressure in each of the suction nozzles at time of suction of the reaction wastewater, a vessel determination unit (15b) that determines whether the reaction vessel (7) is present or not at the disposal position, and a clog determination unit (15c) that determines whether each of the suction nozzles is clogged or not based on change in pressure of the suction nozzle and the presence/absence of the reaction vessel.</p> |
