Patent ID: 8354017

Claim:
A method for measuring the global ion concentration of a body fluid comprising the following steps: application of a stable DC voltage between first and second electrodes of a cell for measuring the global ion concentration of a body fluid so as to cause electrochemical hydrolysis reactions of the body fluid water to occur at the level of said first and second electrodes, measurement of a hydrolysis current generated by said electrochemical hydrolysis reactions of water and, determination of the global ion concentration of the body fluid by comparison with a previously defined calibration curve, said measuring cell comprising a fluid channel arranging at least one passage enabling the body fluid to flow from an inlet to an outlet, said fluid channel having an internal cross-section less than or equal to 1.5 mm between the first and second electrodes arranged on said passage, so that the ion concentration of the body fluid is the factor limiting the kinetics of said electrochemical hydrolysis reactions of the water.