| 摘要 |
PURPOSE:To make it possible to shorten an analytical time and to conserve a specimen required in analysis, by providing a means for up and down driving a specimen suction pipe so that the leading end of said suction pipe is intermittently immersed in the specimen solution. CONSTITUTION:When a specimen container C is placed under a specimen suction pipe 2 and a motor 8 is operated, a slinder 10 begins to move downwardly and the specimen suction pipe 2 attached thereto is fallen. When a pump P is operated at this point of time, the suction pipe 2 is continuously fallen while sucking air to reach a specimen solution at the leading end thereof and further continuously fallen while sucking the specimen solution. When the suction pipe 2 is fallen to a predetermined position, the protruded piece 12 of the slider 10 operates a falling switch 7 while the motor 8 is reversed by a motor control circuit 13 to raise the slinder 10. During rising, the leading end of the specimen suction pipe 2 is exposed to air and upwardly moved while sucking air until reaches an upper limit switch 6 and again moved downwardly by the reversal of the motor 8. |
