| 摘要 |
PROBLEM TO BE SOLVED: To measure more samples in a predetermined time by improving the sharpness of cleaning water and reducing the time required for cleaning a pipet as much as possible. SOLUTION: When a solenoid valve 33 is opened, cleaning water is fed toward a cleaning water jetting block and flows upward through a vertical hole 28 of the block. Subsequently, it flows out from a V-groove 29 to one side of the block and drops into a container 24 before being discharged. Under that state, the suction part 14a of a sampling pipet 14 is advanced into the cleaning water in order to clean the outer circumference of the suction part 14a and the inside of the pipet 14 is cleaned effectively by sucking the cleaning water into the pipet 14 and delivering the cleaning water therefrom. When the solenoid valve 33 is closed, cleaning water in the block flows out gravitationally through a lateral hole. Since the surface of the cleaning water lowers smoothly, water is cut well and substantially no cleaning water adhere to the outer circumferential surface at the suction part 14a. |
