Reference electrode with non-blocking liquid junction

Chemistry: electrical and wave energy – Apparatus – Electrolytic

Reexamination Certificate

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C204S419000

Reexamination Certificate

active

10384209

ABSTRACT:
A reference electrode traps silver ions and chloro complex ions leaching to an internal filling solution so that the blocking of the liquid junction can be prevented. A silver/silver chloride electrode can be provided as an internal electrode in an internal filling solution; and a tube which houses, in order from top to bottom, the internal electrode, an inorganic cation exchanger for trapping silver ions and/or chloro complex ions from leaching from the internal electrode, and a ceramic member for preventing the diffusion of the silver ions and/or the chloro complex ions to the internal filling solution.

REFERENCES:
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patent: 07-159367 (1995-06-01), None
Derwent abstract for DE 33 05 962 C2, Aug. 1984.
Certified translation of DE 33 05 962 C2, Aug. 1984.
Wang Bingji et al., “Study of new inorganic ion exchangers. I. Synthesis and properties of zirconium vanadopyrophosphate”, Engineering Information, Inc., New York, NY, Apr. 1, 1994, XP-002266515 abstract only.
Chokkaram S. et al., “Ion Exchange and Thermal Studies of Sulfate Ziconia”, Journal of Colliod and Interface Science, Academic Press, New York, NY, vol. 165, No. 1, Jun. 1, 1994, pp. 160-168.
Wang Bingjl et al., Study of New Inorganic Ion Exchangers, I. Synthesis and Properties of Zirconium Vanadoyrophosphate, Engineering Information, Inc., New York, NY, Apr. 1, 1994, XP-002266515; Full English Traslation.

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