Calibration apparatus for analytical systems

Details Calibration apparatus for analytical systems Calibration apparatus for analytical systems

G - Physics

01

N

73/0.5

G01N 33/48 (2006.01) G01D 18/00 (2006.01) G01N 27/416 (2006.01) G01N 33/487 (2006.01)

Patent

CA 1063379

CALIBRATION APPARATUS ABSTRACT OF THE DISCLOSURE Calibration apparatus is described for use in a cali- bratable analytical system wherein a continuously flowing liquid sample, either alone or in admixture with other liquids, is normally caused to contact a sensor. The novel calibration apparatus enables diversion of said continuous- ly flowing sample out of contact with the sensor and alternative contact of a calibration reference liquid or other calibration sample with the sensor. The calibration apparatus of the present invention is particularly useful in a system for analytical monitoring of a continuously flowing liquid blood sample obtained through a double lumen cannula inserted into a blood vessel of a human or animal subject. This apparatus permits the analytical system to be calibrated without the necessity of removing any portion of the cannula from the subject thereby avoiding the risk of loss of sterility inherent in such removal. - 1 -

275137

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