Method of stabilizing a carbon dioxide sensor

Details Method of stabilizing a carbon dioxide sensor Method of stabilizing a carbon dioxide sensor

G - Physics

01

N

G01N 33/84 (2006.01) G01N 21/78 (2006.01) G01N 31/22 (2006.01) G01N 33/52 (2006.01) A61B 5/14 (1990.01)

Patent

CA 2095002

Docket No. 33494 METHOD OF STABILIZING A CARBON DIOXIDE SENSOR ABSTRACT OF THE DISCLOSURE The method of stabilizing a carbon dioxide sensor involves formulation of a bicarbonate buffer solution in the sensor with a bicarbonate ion concentration of from about 30 mM to about 200mM bicarbonate, and preferably about 100 mM bicarbonate. The method also involves treatment of the sensor to reduce the instability that may occur in carbon dioxide sensors when such sensors are exposed to either very low or very high carbon dioxide levels for extended periods of time. The sensor is treated by exposing the sensor to an aqueous solution containing at least 2 weight percent carbon dioxide, for from several days to several months. the solution may be prepared in advance, or may be dynamically infused with carbon dioxide to provide the desired carbon dioxide content.

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