Apparatus for measuring the concentration of electrolytes

Details Apparatus for measuring the concentration of electrolytes Apparatus for measuring the concentration of electrolytes

G - Physics

01

N

324/23

G01N 27/28 (2006.01) G01N 27/403 (2006.01) G01N 27/414 (2006.01) G01N 33/487 (2006.01)

Patent

CA 1297946

ABSTRACT OF THE DISCLOSURE Apparatus for measuring electrolyte concen- trations in fluid samples is provided. The apparatus includes an ion selective electrode having a plurality of ion selective detection sites. Each site has an affinity for a preselected electrolyte of interest and generates a potential having a magnitude related to the concentration of the corresponding electrolyte in the sample. A voltage to optical transducer circuit is provided to convert the voltage differentials to optical signals having intensity related to the concentration of the electrolytes in a first embodiment, a digital code related to the concentration of the electrolytes in a second embodiment, and an optical absorption or density value related to the concentration of the electrolytes in a third embodiment. The optical signals are suitable for detection by conventional optical detector apparatus of assay instruments and may be processed using conven- tional two point linear interpolation techniques to determine the concentrations of the preselected electrolytes.

568248

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