AUTOMATIC ANALYZER, DISPENSING DEVICE, AND DISPENSING CONTROL METHOD

• Main Authors: TSUKADA, Nobuhiro, HSU, Ruochi, NODA, Kazuhiro, MATSUOKA, Shinya
• Format: Patent
• Language: English
• Published: 15.06.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

[Problem to be solved]There is provided a dispensing control method and a dispenser that suppress the division of an air layer and that obtain high dispensing accuracy.[Solution]An automatic analyzer includes: a nozzle 20 that dispenses a dispensed liquid 23; a syringe motor 209 that generates a pressure fluctuation for controlling a flow velocity on aspiration or discharge of the dispensed liquid 23 in the nozzle 20; a piping 210 that connects the nozzle 20 to the syringe motor 209; and a controller 102 that controls operations of the nozzle 20 and the syringe motor 209. The controller 102 calculates positions of interfaces 31 to 34 in the piping 210, and the controller 102 controls the flow velocity based on the positions of the interface 31 to 34 and orientations of the interfaces 31 to 34 that move.