DUPLEX PARTICLE MEASURING DEVICE

It is an object to provide a complex particle measurement apparatus capable of preventing a liquid puddle when the image-based method and the laser diffraction/scattering-based method are combined with each other.A complex particle measurement apparatus (200) comprising a first light source (211) that irradiates a first storage cell (32); a photodetector (22) that detects intensity of light; a second light source (122) that irradiates a second storage cell (33); an imaging unit that images a particle group; an image data output unit that outputs image data; a supporter (3) that supports the first storage cell and the second storage cell; and a communication pipe (35) that connects the first storage cell and the second storage cell to pass a 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.