Method of making a liquid junction for a reference electrode
AssigneeHoriba, Ltd.
InventorsHiroshi Maruyama, Masashi Watanabe
Life of this patent
Estimating the term…
Abstract
A liquid junction for a reference electrode and a method of forming the same, in which a hydrophobic polymer support material has a liquid junction layer or portion of material therein comprised of a hydrophobic polymer in mixture with either an inactive particulate substance, an electro-chemically inactive salt, or a combination of said inactive particulate substance and said electro-chemically inactive salt. The support member and the liquid junction therein are compression formed in a mold and are heat-treated following the final compression treatment.
Claims6
A method of forming a liquid junction for a reference electrode comprising:
- forming a first support layer of polytetrafluoroethylene alone in a mold;
- compressing said first support layer;
- forming a second liquid junction layer on top of said compressed first layer, said second layer comprising one material selected from the group consisting of:
- a mixture of a polytetrafluoroethylene and an inactive particulate substance
- a mixture of polytetrafluoroethylene and an electro-chemically inactive salt, and
- a mixture of polytetrafluoroethylene, an inactive particulate substance, and an electro-chemically inactive salt;
- compressing said second liquid junction layer;
- forming a third support layer of polytetrafluoroethylene alone on top of said compressed second liquid junction layer;
- compressing said third support layer;
- and
- sintering said three compressed layers.
Dependencies are inferred from the claim text.