Process and apparatus for the electrochemical determination...

Details Process and apparatus for the electrochemical determination... Process and apparatus for the electrochemical determination...

G - Physics

01

N

G01N 27/00 (2006.01) G01N 1/10 (2006.01) G01N 33/00 (2006.01) G01N 33/49 (2006.01)

Patent

CA 2051245

Counterpart of Italian 21475 A/90 PROCESS AND APPARATUS FOR THE ELECTROCHEMICAL DETERMINATION OF PCO2 IN BLOOD ABSTRACT In a blood gas analyzer, a measurement liquid, advantageously high-purity water, is fed from a suitable vessel to a diffusion cell in which the measurement liquid is brought into contact via a diffusion membrane with the blood sample to be tested. When the gases dissolved in the sample have diffused through the membrane, the measurement liquid which has remained static in the diffusion cell is propelled into a measuring cell in which the value of an electrical quantity related to the PCO2 is determined. The measurement liquid is then fed to discharge. In a preferred embodiment, the measurement liquid is discharged into the vessel from which it has been initially withdrawn via passage through means for retaining ionic impurities.

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