| 摘要 |
PURPOSE:To reduce the production cost with a smaller size while simplifying the equipment as a whole by agitating a sample and a dilution liquid with a nozzle for sucking or discharging a liquid sample to enable effective within a short time while eliminating the need for any separate agitator. CONSTITUTION:A waste liquid pump 20 is driven in the direction of the arrow at the time t5 to discharge a sample liquid 24 ended in the measurement to a waste liquid vessel 23 from a waste liquid nozzle 22. A nozzle 3 moves to the agitation and cleaning position (b) after injects the sample liquid 24 to a measuring vessel 6. Synchronizing the end of the movement, valves 17 and 19 are opened or closed alternately at the times t7 and t8 while a piston 18a is driven vertically to discharge a dilution liquid 15 into an agitation vessel 5 from the nozzle 3. With the discharge of the dilution liquid 15, the inside of the nozzle 3 is cleaned and the outer wall of the nozzle 3 and the inside of the agitation vessel 5 with that 15 stored in the agitation vessel 5. After a fixed frequency of the cleaning, at the time t9, the waste liquid pump 20 is driven to discharge the liquid into the waste liquid vessel 23 through a waste liquid nozzle 21. The nozzle 3 being cleaned is carried to the sample sucking position (a) in preparation of the subsequent suction of the sample. |
