Method for producing a liquid phase calibration substance...

Details Method for producing a liquid phase calibration substance... Method for producing a liquid phase calibration substance...

G - Physics

01

N

G01N 33/49 (2006.01) G01N 27/416 (2006.01) G01N 33/00 (2006.01) G01N 33/96 (2006.01)

Patent

CA 2075021

ABSTRACT A method for producing a liquid phase substance having a pre-established concentration of CO2 suitable for calibrating analytical instruments such as hemogasanalyzers consists in: - preparing an aqueous solution of precisely known strength of a water-soluble salt of carbonic acid (bicarbonate or alkaline carbonate), - then transferring said solution to a flow reactor containing a cation exchange resin in hydrogenionic form, - passing the aforesaid solution of carbonic acid salt through the aforesaid cation resin, - thereby achieving the reaction of producing a pre-established quantity of CO2, and - transferring the eluate thus obtained directly to the analytical instrument for calibration.

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