Specimen identification and dispensation device and specimen identification and dispensation method

A specimen identification and dispensation method of dispensing a target specimen as an aliquot target out of specimens, which are measurement targets, dispersed in a sample liquid flowing in a flow passage, comprising:

• (a) a supply step of separating the specimen, and dispersing and supplying the specimen into the sample liquid within a supply container;
• (b) an identification step of measuring light information of the specimen by irradiating exciting light onto the specimen and identifying the specimen as a target specimen based on the light information of the measured specimen;
• (c) a concentration adjustment step of adjusting the number of the specimens in an aliquot solution in which one or a plurality of target specimens identified in the identification step (b) is dispersed;
• (d) a dispensation step of dispensing the aliquot solution, which is identified through the identification step (b) and adjusted in number through the concentration adjustment step (c), into a dispensation target container through a nozzle;
• and
• (e) a resupply step of supplying a liquid containing the target specimen from the dispensation target container to the supply container of the supply step (a) as the sample liquid, wherein
• the concentration adjustment step (c) comprises adjusting the number of the target specimens as an aliquot object and the number of non-target specimens in the aliquot solution to desired numbers based on a sample liquid concentration that is a concentration of the number of specimens in the sample liquid in which the specimens are dispersed, and an amount of the aliquot solution, and
• the sample liquid flows from the supply container of the supply step (a) and through the identification step (b) before exiting the nozzle.