Patent ID: 11953472
Assignee: DIONEX SOFTRON GMBH
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 9:
10. A method for sample loading comprising the steps of: a. providing a liquid chromatography system comprising: a first switching valve, a second switching valve, a first connecting line fluidly connecting the first switching valve to the second switching valve, a second connecting line fluidly connecting the first switching valve to the second switching valve, a metering device located in the first connecting line, a separation column, a trap column, and an analytical pump; wherein the system further comprises: a sample pick up means adapted to retrieve a sample and a seat adapted to receive the sample pick up means; wherein the first connecting line comprises: one end fluidly connected to the second switching valve, tubing connecting the second switching valve to the metering device and tubing connecting the metering device to the sample pick up means; and b. loading a sample into the trap column; and c. fluidly connecting the trap column to the separation column and the analytical pump to the trap column via the first switching valve and generating a flow from the analytical pump to the separation column.