Chemical analysis apparatus and chemical analysis method

A chemical analysis apparatus for inserting a sample serving as a substance to be analyzed and a reagent into a reaction container and agitating them by irradiating sound waves to said reaction container, said chemical analysis apparatus comprising:

• a piezoelectric element generating said sound waves;
• and
• a driver for driving said piezoelectric element,
• said driver comprising:
• a wave form producing device for producing an oscillation waveform having a fundamental frequency of said sound waves to be irradiated;
• an auxiliary waveform producing device for producing an oscillation wave form having a frequency lower than that of said oscillation waveform;
• a multiplying circuit for creating a multiplied waveform between said waveform and the wave form having the lower frequency;
• and, a power amplifier for power-amplifying said multiplied waveform,
• wherein it is intermittently irradiated with said sound wave in said reaction container, and
• further, said wave form producing device has a function capable of frequency-modulation with a prescribed frequency width.