Method for measuring ionic concentration utilizing an ion-sensing electrode
First Claim
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1. A method for measuring the concentration of a substance in a sample liquid, said method utilizing an ion-sensing electrode including a permeable membrane spaced from said electrode, said space between said membrane and said electrode containing an electrolyte solution, said method comprising the steps of:
- premixing the sample liquid with a reagent to release said substance prior to contact with the permeable membrane;
contacting said permeable membrane with said sample liquid;
circulating said electrolyte solution through said space at a rate greater than said substance diffuses through said membrane;
stopping said circulating electrolyte solution; and
measuring said concentration.
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Abstract
A method for measuring the concentration of a gas. The method includes circulating an electrolyte solution between an electrode and a gas-permeable, ion-impermeable membrane spaced from said electrode. The ionic concentration is measured after the circulating electrolyte has been stopped.
30 Citations
5 Claims
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1. A method for measuring the concentration of a substance in a sample liquid, said method utilizing an ion-sensing electrode including a permeable membrane spaced from said electrode, said space between said membrane and said electrode containing an electrolyte solution, said method comprising the steps of:
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premixing the sample liquid with a reagent to release said substance prior to contact with the permeable membrane; contacting said permeable membrane with said sample liquid; circulating said electrolyte solution through said space at a rate greater than said substance diffuses through said membrane; stopping said circulating electrolyte solution; and measuring said concentration. - View Dependent Claims (2, 3, 4, 5)
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Current AssigneeBeckman Instruments, Inc. (Danaher Corporation)
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Original AssigneeBeckman Instruments, Inc. (Danaher Corporation)
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InventorsBuzza, Edmund E.
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Primary Examiner(s)Tung, T.
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Application NumberUS06/350,696Time in Patent Office1,037 DaysField of Search204/1 P, 204/195 P, 204/409, 204/415US Class Current204/409CPC Class CodesG01N 33/4925 measuring blood gas content...
