System for measuring the partial pressure of carbon dioxide in liquid samples, particularly in biological samples.

摘要

A system is disclosed for measuring the partial pressure of a gas, and in particular of carbon dioxide (p CO ). The system uses an electrolytic solution of weak ionic strenght which is circulated between an ion-selective electrode and a membrane permeable to gases but not to the ions and substantially distant from the electrode. The partial pressure of the gas is measured after a fraction of the electrolytic solution has been permeated by the gas present in the sample and subsequently has been transferred on the sensible portion of the electrode.