Method of and an apparatus for measuring ion concentrations in s

Details Method of and an apparatus for measuring ion concentrations in s Method of and an apparatus for measuring ion concentrations in s

1982-05-13

1984-12-25

Tokar, Michael J.

Electricity: measuring and testing

Electrolyte properties

Using a ph determining device

324450, 204412, G01N 2756

Patent

active

044906781

ABSTRACT:
A method of measuring ion concentrations in solutions comprises using at least two ion sensitive test electrodes in the solution to be measured, the test electrodes having different sensitivities only in respect of the ion or ion mixture to be measured, setting the operating point of the test electrodes by means of at least one common reference electrode, and evaluating the signals of the test electrodes to produce a measurement result essentially independent of the properties of the reference and test electrodes which would interfere with accurate measurement.
The invention also includes apparatus suitable for carrying out the method.

REFERENCES:
patent: 3512080 (1970-05-01), Hanson
patent: 3862895 (1975-01-01), King et al.
patent: 4332658 (1982-06-01), Tsuboshima
"Ion-Sensitive Field Effect Transistors", Janata et al., Ion-Selective Electrode Review, vol. 1, 1979, pp. 31-79.

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