| 摘要 |
PROBLEM TO BE SOLVED: To provide a dispensing device and method capable of accurately dispensing a micro amount of liquid sample of severalμL or less without individually previously measuring the specific gravity or kinematic viscosity coefficient. SOLUTION: The dispensing device 1 and dispensing method comprise a dispensing nozzle 2 and syringe pump 6 interconnected through a pipe 14, suck the liquid sample from the dispensing nozzle by the syringe pump into the pipe via an air layer, deliver a predetermined amount of sucked liquid sample, and perform dispensing. The dispensing device 1 comprises a valve 3 arranged between the dispensing nozzle 2 and syringe pump 6 and near the dispensing nozzle, and a control circuit 10 that opens the valve during sucking the liquid sample via the air layer from the dispensing nozzle, closes the valve at the completion of suction of the liquid sample, compresses the air layer between the dispensing nozzle and syringe pump by operating the syringe pump, and opens the valve to deliver a predetermined amount of liquid sample by directly operating the pressure of the compressed air layer. COPYRIGHT: (C)2008,JPO&INPIT |
