Analyte and pH measuring sensor assembly and method

Details Analyte and pH measuring sensor assembly and method Analyte and pH measuring sensor assembly and method

1991-12-26

1994-08-09

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204403, 204412, 204415, 204418, 204419, 204422, 204433, 204435, G01N 2726

Patent

active

053363884

ABSTRACT:
The sensor apparatus of the present invention includes on a nonconducting substrate electrically conductive pathways leading to at least two analyte electrodes and one reference electrode. The analyte electrodes each have sensitivities for both analytes but each has a membrane and/or electrolyte that favors the conversion of ionic potential to electronic potential for a different analyte. The apparatus has an fluid circuit means for liquid contact between the electrodes so that electric signals can be sent by electric circuitry to an analyzing means. The analyzing means determines the values of the analytes from the following simultaneous relationships: ##EQU1## where: delta mV=change in millivolts

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