Patent ID: 6271043
Filing Date: 2001-08-07
Classification: G01N,Y10T

Abstract:
A method of operating a detector, said method comprising the steps of:(a) flowing a liquid sample along a first flow path between a fluid inlet and drain;(b) drawing a sampling portion of the liquid sample from the first flow path into the inlet end of a hollow sampling tube, said sampling tube having an inlet end in said first flow path and an outlet end outside said first flow path;(c) passing said sampling portion along a second flow path to the detector, said second flow path being defined by the hollow interior of said sampling tube, the outlet end of said sampling tube, and a conduit extending between said outlet end and the detector, to analyze the sampling portion;(d) alternately coupling a container containing a calibration liquid to said sampling tube such that the inlet end of said sampling tube is immersed in said calibration liquid, drawing a calibration portion of the calibration liquid from the container into the inlet end of the sampling tube, and passing said calibration portion along said second flow path to the detector to analyze the calibration portion.