Reference liquid for blood gas equipment
AssigneeRadiometer A/S
InventorsSoren K. Sorensen, Carl C. Holbek
Life of this patent
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Abstract
A reference liquid for the calibration and/or quality control of blood gas analyzers. The reference liquid comprises an aqueous phase and either polymer-coated microcapsules containing at least one organic substance functioning as oxygen carrier, or porous particles of a solid substance functioning as oxygen carrier. An example of the polymer-coated microcapsules is nylon-coated microcapsules containing a mixture of perfluorotributyl amine and isooctane. An example of the porous particles of a solid substance is particles of porous silicone rubber.
Claims12
A synthetic reference liquid for quality control and/or calibration of blood gas measuring equipment, said reference liquid showing, at a fixed temperature, a known pH, PCO.sub.2 and PO.sub.2 value, said reference liquid comprising an aqueous phase containing at least one pH buffer system and particles suspended in said aqueous phase, the particles being either (1) polymeric oxygen-permeable microcapsules containing at least one organic liquid which shows a considerably greater ability to reversibly contain oxygen than does water, or (2) particles of porous silicone rubber.
Dependencies are inferred from the claim text.