| 摘要 |
PURPOSE:To improve the effect and efficiency of cleaning and to operate analyses at a high speed with higher efficiency by oscillating a piezo-electric oscillator which comes into substantial contact with a cleaning liquid, thereby executing cleaning. CONSTITUTION:The cleaning liquid is passed into a dispensing nozzle 1 directed to an aperture 25 for reserving the cleaning liquid and while the tip of the dispensing nozzle 1 is held immersed in the cleaning liquid in the aperture 25, the piezo-electric oscillator 26 which comes into substantial contact with the cleaning liquid is oscillated. Since the piezo-electric oscillator 26 comes into substantial contact with the cleaning liquid in the aperture 25, said oscillator is subjected to an insulation treatment by coating consisting of, for example, an org. high polymer, etc. An AC voltage of an C power supply is impressed thereto with electrodes 28a, 28c on both sides as one terminal and an intermediate electrode 28b as the other terminal. The dispensing nozzle 1 is supported by a dispensing holder 22 and is moved to undergo the prescribed stage by movement of a nozzle moving beam 21. |
