| 摘要 |
PURPOSE:To accurately divide liquid into the different systems each having different amount of required liquid to be injected, by providing a plurality of pump mechanisms which circulate the liquid to be divided after the division. CONSTITUTION:The discharge amount of one stroke of a syringe is a minimum basic amount. Reagent in a reagent container 41 is sucked into the syringe 31 via a selector valve 35 and a directional valve 32. Then, the reagent in the syringe 31 is discharged from a nozzle 40 via the directional valve 32 and a selector valve 36. After the required amount to be injected has been divided, the selector valves 35 and 36 are switched during the discharge operation. Then the reagent in the syringe 31 is returned to the reagent container 41 via the selector valves 36 and 35, and the reagent is circulated. By providing a plurality of such pump structures and controlling the selector valves, respectively, the required amount of the reagent is accurately divided into the different systems having different amounts of injection. |
