Ion selective electrodes

Details Ion selective electrodes Ion selective electrodes

1980-01-28

1982-07-20

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

128635, 204195M, 204195F, G01N 2730

Patent

active

043404570

ABSTRACT:
An ion selective electrode capable of production in miniaturized form suitable for in vivo monitoring is produced by coating a metal-metal salt half cell with a layer of hydrophilic material containing electrolyte with an over-layer of an ion selective membrane. The coatings may be applied by a dipping and drying process. Stability is enhanced by addition of silver black and platinum black to the half cell and those materials may be added as layers in a similar dip and dry process. A companion reference electrode half cell is made of the same materials that are used in making the "half cell" portion of the selective electrode, except that the reference half cell is coated with a protein layer. Special packaging and a special procedure facilitate calibration.

REFERENCES:
patent: 3824157 (1974-07-01), Macur
patent: 3856649 (1974-12-01), Genshaw et al.
patent: 4197852 (1980-04-01), Schindler et al.
patent: 4214968 (1980-07-01), Battaglia et al.
patent: 4263343 (1981-04-01), Kim
Hackh's Chemical Dictionary, pp. 529, 612 & 637, Fourth Edition, (1972).
T. Treasure et al., J. Medical Engineering & Technology, pp. 271-273, vol. 1, No. 5, Sep. 1977.

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