G - Physics – 01 – N
Patent
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
Clark Frederic L.
Davis Charles L.
Durley Benton A. III
Garrett Paul E.
Pumphrey Edward G.
Abbott Laboratories
Goudreau Gage Dubuc
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