Method of stabilizing a carbon dioxide sensor

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

1992-05-22

1993-09-21

Housel, James C.

Chemistry: analytical and immunological testing

Composition for standardization, calibration, simulation,...

Blood gas standard or control

436 18, 436127, 436133, 436178, 73 1R, 73 2321, 204403, G01N 3100, G01N 118

Patent

active

052468593

ABSTRACT:
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 100 mM to about 200 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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U.S. Dept of Health and Human Services, Fiber-Optic Carbon Dioxide Partial Pressure Sensor, pp. 1-12, Mar. 1, 1983.

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