Microparticle sorting device and method for sorting microparticles

A microparticle sorting device, comprising:

• a light detection unit configured to optically detect a microparticle that flows through a flow path;
• a droplet forming unit configured to form a droplet containing the microparticle;
• a device adjustment unit configured to adjust the microparticle sorting device before actual measurement of the microparticle, wherein
• based on information obtained from the microparticle to be measured, the device adjustment unit is configured to:
• adjust an irradiation angle of irradiation light;
• calibrate a relative position of a chip that includes the flow path relative to the irradiation light based on the adjustment of the irradiation angle of the irradiation light;
• and
• calibrate a delay time from light irradiation to the microparticle to formation of the droplet;
• and
• a droplet detection unit configured to detect a state of the droplet, wherein the device adjustment unit is further configured to calibrate droplet formation in the droplet forming unit based on the state of the droplet.