Flushable reference cell for potentiometric measurements

Details Flushable reference cell for potentiometric measurements Flushable reference cell for potentiometric measurements

1985-08-15

1986-06-03

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204402, 204435, 324425, 324438, G01N 2730

Patent

active

045928231

ABSTRACT:
The clogging of junctions of electrochemical reference cells by contaminants is prevented by a triple junction design incorporating dual, independently operative flushing conduits. The first conduit flushes the exterior of the first junction and the exterior of the second junction, and the second conduit flushes the interior of the second junction and the exterior of the third junction. When the cell is used in-line on a chemical process stream, pressure equalizing means are employed between the stream and the standard electrode, of which the third junction is an element. Elevation of the exits of the flushing conduits above the junctions releases air from the cell which may collect at the junctions and impair the accuracy of the readings.

REFERENCES:
patent: 3486997 (1966-12-01), Petersen
patent: 3997420 (1976-12-01), Buzza
patent: 4282081 (1981-08-01), Arrance, Sr.
patent: 4285792 (1981-08-01), McGandy
patent: 4378280 (1983-03-01), Dufau
patent: 4390406 (1983-06-01), Kato et al.
patent: 4401548 (1983-08-01), Brezinski

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