Patent ID: 8236091

Claim:
A fluid separation method, comprising: providing a mixed fluid with different properties, wherein the mixed fluid at least comprises a first fluid and a second fluid, and the first fluid and the second fluid comprise different properties; providing the mixed fluid via a sampling entrance, wherein the mixed fluid flows to a first separation column, the first fluid in the mixed fluid performs a separation procedure in the first separation column, the second fluid in the mixed fluid flows to a second separation column connected to the first separation column in series through a guide multi-channel valve, the second fluid performs a separation procedure in the second separation column, and at this time, the guide multi-channel valve is in a first mode; switching the guide multi-channel valve to a second mode, such that the second fluid is trapped within the second separation column and the first fluid already separated by the first separation column flows through a bypass line connected to the first separation column in series via the guide multi-channel valve and is detected by a detector connected to the bypass line in series, wherein the bypass line is connected to the second separation column in parallel; and switching the guide multi-channel valve to the first mode, such that the second fluid trapped within the second separation column and already separated by the second separation column is delivered to the same detector through the guide multi-channel valve for being detected.