Patent ID: 11913917
Assignee: SHIMADZU CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The chromatograph according to claim 3, further comprising a controller configured to control, for each analysis flow path, the state switch valve, the measuring pump, and the cleaning pump, wherein
the controller is configured to control the state switch valve to make switching to the second state and is configured to control the measuring pump to suction the sample from the sample container into the retention flow path while the needle is inserted in the sample container,
the controller is configured to control the state switch valve to make switching to the first state such that, after the sample is suctioned into the retention flow path, the suctioned sample flows from the retention flow path through the injection flow path to the downstream analysis flow path together with the mobile phase delivered by the high-pressure pump, and
the controller is configured to control the state switch valve to make switching to the second state and is configured to control the cleaning pump to deliver a cleaning solution to the retention flow path and the injection flow path through the low-pressure flow path while the sample injected into the downstream analysis flow path is delivered to the column.