Complex particle measurement apparatus

A complex particle measurement apparatus comprising:

• a first light source that irradiates with light a particle group in a first storage cell storing a sample solution containing the particle group dispersed in a dispersion medium;
• a photodetector that detects intensity of diffracted or scattered light generated by irradiation of the light irradiated;
• a light intensity signal output unit that outputs a light intensity signal to an arithmetic device for calculating particle size distribution of the particle group based on the intensity of the light output from the photodetector;
• a second light source that irradiates with light the particle group in a second storage cell storing the sample solution;
• an imaging unit that images the particle group irradiated with light from the second light source;
• an image data output unit that outputs image data to an arithmetic device for calculating a physical property of particles of the particle group based on the image data imaged by the imaging unit;
• a supporter that supports the first storage cell and the second storage cell;
• and
• a communication pipe that connects the first storage cell and the second storage cell to pass the sample solution,
• wherein the first storage cell and the second storage cell have bottom surfaces located at positions different from each other, and
• the communication pipe is laid such that a channel from the first storage cell to the second storage cell has an incline of not less than 0 or not more than 0.