SELF-CALIBRATING SINGLE-USE SENSING DEVICE FOR CLINICAL CHEMISTRY ANALYZER

摘要

SELF-CALIBRATING SINGLE-USE SENSING DEVICE FOR CLINICAL CHEMISTRY ANALYZER A single-use sensing device for a clinical chemistry analyzer system includes a carrier which supports a capillary passage . Species selective sensors are located within a test chamber portion of the capillary passage . A rotatable multichamber reservoir having a calibrant chamber for holding calibrant fluid and a sample chamber for containing a sample fluid is rotated first to a calibrant test position and then to a sample test position. In the calibrant test position, the calibrant chamber is connected to the inlet of the capillary passage to draw calibrant fluid into the test chamber . In the sample test position, the sample chamber is connected to the inlet to draw sample fluid into the test chamber and purge the calibrant fluid from the test chamber . A set of sensor readings are taken at each position, and concentration values are derived from the two sets of readings.