Optimizing method of suction condition of microparticle and microparticle fractionating device

A method for determining microparticle suction, the method comprising:

• determining a first time at which microparticles pass a position in a main flow path, wherein the microparticles are sucked from the main flow path into a microparticles suction flow path with a suction force by the microparticles suction flow path;
• counting a number of particles that are sucked into the microparticle suction flow path;
• and
• determining a first time period from when the microparticles pass the position in the main flow path to when suction by the microparticle suction flow path should be performed, based on:
• a time or distance from when the microparticles have passed the position in the main flow path to when the suction is performed, and
• the number of microparticles counted.

A non-transitory computer-readable storage medium encoded with executable instructions that, when executed by at least one processor, cause the at least one processor to perform:

• determining a first time at which microparticles pass a position in a main flow path, wherein the microparticles are sucked from the main flow path into a microparticles suction flow path with a suction force by the microparticles suction flow path;
• counting a number of particles that are sucked into the microparticle suction flow path;
• and
• determining a first time period from when the microparticles pass the position in the main flow path to when suction by the microparticle suction flow path should be performed, based on:
• a time or distance from when the microparticles have passed the position in the main flow path to when the suction is performed, and
• the number of microparticles counted.