Fluoride sensing electrodes with longer service life, retrofitta

Details Fluoride sensing electrodes with longer service life, retrofitta Fluoride sensing electrodes with longer service life, retrofitta

1995-05-22

1996-10-15

Bell, Bruce F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204416, 204435, 422 8203, G01N 2726

Patent

active

055650767

ABSTRACT:
The service life of a conventional free fluoride ion sensitive electrode can be improved by shielding the outer casing of the conventional electrode against contact with the liquid composition in which the free fluoride ions concentration is to be measured, particularly when the solution is a hot acid solution containing surfactants and/or oxidizing agents, such as is normally used for cleaning aluminum beverage containers or providing a protective surface treatment to aluminum surfaces.

REFERENCES:
patent: Re24222 (1956-09-01), Patnode et al.
patent: 3431182 (1969-03-01), Frant
patent: 4049526 (1977-09-01), Maurer
patent: 4128468 (1978-12-01), Bukamier
patent: 5245869 (1995-06-01), Noding et al.
patent: 5393402 (1995-02-01), Dervaes et al.
Fluorocarbon Elastomers, vol. 7, pp. 258-267 no month or year available.

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