Analytical chromatographic method

Details Analytical chromatographic method Analytical chromatographic method

G - Physics

01

N

G01N 30/20 (2006.01) F16K 7/16 (2006.01) F16K 11/22 (2006.01)

Patent

CA 2718301

An analytical chromatographic method using a fluid sampling system is provided. The system includes a sample inlet, a carrier inlet, a sampling loop having an inlet and an outlet and analytical means all operatively interconnected to the ports of a diaphragm-sealed valve which are independently actuated and serially interconnected. The method involves actuating corresponding ports of the valve in sequence to perform a series of operations. The method first involves providing and then isolating a fluid sample in the sampling loop. The sampling loop is then pressurized by providing fluid communication from the carrier inlet to the inlet of the sampling loop. The method next involves preventing fluid communication between the ports, and lastly providing fluid communication from the outlet of the sampling loop to the inlet of the analytical means, thereby injecting the sample in the analytical means.

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