Ph sensor and reference electrode thereof
AssigneeLuh Cherng Enterprise Co., Ltd.
InventorsWen-Feng TSAI, Ke-Fu LIN
Life of this patent
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Abstract
A pH sensor for detecting a pH of a sample includes a reference electrode and a glass electrode. The reference electrode includes a hollow tubular housing, and at least one water absorbing unit disposed in the housing and including a porous junction member configured to contact the sample, and a water absorbing member disposed on one side of the porous junction member that is opposite to the sample. The water absorbing member is made by soaking a superabsorbent polymer in potassium chloride solution. The glass electrode is inserted into the water absorbing member, and protrudes from the junction member toward the sample.
Claims16
A reference electrode of a pH sensor configured to contact a sample, comprising:
- a container unit including a hollow tubular housing;
- and
- at least one water absorbing unit disposed in said tubular housing and including a porous junction member configured to contact the sample, and a water absorbing member disposed on one side of said porous junction member that is opposite to the sample, said porous junction member and said water absorbing member contacting each other at an interface, said water absorbing member being made from a superabsorbent polymer.
A pH sensor for detecting a pH of a sample, comprising:
- a reference electrode configured to contact a sample and including a container unit and at least one water absorbing unit, said container unit including a hollow tubular housing, said at least one water absorbing unit being disposed in said tubular housing and including a porous junction member configured to contact the sample, and a water absorbing member disposed on one side of said porous junction member that is opposite to the sample, said porous junction member and said water absorbing member contacting each other at an interface, said water absorbing member being made from a superabsorbent polymer;
- and
- a glass electrode inserted into said water absorbing member of said at least one water absorbing unit and protruding from said junction member of said at least one water absorbing unit toward the sample.
Dependencies are inferred from the claim text.