| 摘要 |
PURPOSE: To provide an automatic chemical analysis device mounting a reagent dispensing system for reducing contaimination between reagents with a simple configuration. CONSTITUTION: The automatic chemical analysis device is provided with a chennel control means 214 which is inserted halfway through a plurality of reagent retraction channels 213 and 216, can select the connection state on the upstream and downstream sides from a desired retraction channel in a plurality of reagent retraction channels 213 and 216, and at the same time, can disconnect the communication between the upstream side and the discharge bath side from each reagent retraction channel, and a channel switching means 220 which is inserted halfway through each lower side of a plurality of reagent retraction channels and selectively switches the side of the channel control means 214 of the reagent retraction channel between each nozzle and the side of a reagent container 222. Each of a plurality of upstream side reagent retraction channels 213 between a channel branch means 212 and the channel control means 214 is set to a capacity for storing a liquid which is equal to or more than the maximum weighing capacity of a weighing means 204 and each of a plurality of downstream side reagent retraction channels 216 between the channel control means 214 and each channel switching means 220 is set to a capacity for storing a liquid which is equal to or more than a dummy reagent capacity. |
