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PH electrode

An electrode and electrode connection technology, applied in the field of pH electrodes, can solve the problems of inability to completely eliminate the influence, inaccurate calibration results, etc., and achieve the effects of simple structure, easy preparation, and improved influence

Pending Publication Date: 2017-10-24
上海博取仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the existing structure is that the liquid level of the external reference electrolyte is too low, causing the large area above the electrolyte replenishment port to be unable to completely eliminate the influence of static electricity attached to the surrounding electrical appliances on the calibration results, resulting in inaccurate calibration results

Method used

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  • PH electrode

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Embodiment Construction

[0013] In order to illustrate the technical solution of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as figure 1 Shown:

[0015] A pH electrode, comprising a glass shell 1 and a leak stopper 7 . The front end of the glass housing 1 is provided with a pH sensitive film 2, and the rear end is connected to an electrode lead wire interface 3; the glass housing 1 is provided with an internal reference electrode 4 and an external reference electrode 5, and one end of the internal reference electrode 4 is It is connected to the pH sensitive membrane 2, and the other end is connected to the electrode lead wire interface 3; the external reference electrode 5 is arranged in parallel with the internal reference electrode 4; the glass housing 1 includes an electrolyte chamber 11 and an extension section 12, the The electrolyte chamber 11 is filled with an external reference electrol...

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Abstract

The invention discloses a pH electrode, which comprises a glass casing, wherein the front end of the glass casing is provided with a pH sensitive film; the back end of the glass casing is connected with an electrode lead-out line interface; an inner reference electrode and an outer reference electrode are arranged in the glass casing; one end of the inner reference electrode is connected with the pH sensitive film, and the other end is connected with an electrode lead-out wire interface; the outer reference electrode and the inner reference electrode are in parallel arrangement; an electrolyte cavity and an extending section are arranged on the glass casing; outer reference electrolyte is filled in the electrolyte cavity; the electrolyte cavity nears the back end of the glass casing; the extending section is positioned between the electrolyte cavity and the pH sensitive film; the length of the extending section is greater than the length of the electrolyte cavity. An electrolyte supplementing opening is formed in the glass casing. The pH electrode has the advantages that the structure is simple; the preparation is easy; the signal output shielding is effectively improved; the influence of external static electricity on the calibration result is improved.

Description

technical field [0001] The invention belongs to the technical field of electrode calibration, and in particular relates to a pH electrode. Background technique [0002] Acidity and alkalinity are one of the most important chemical properties of aqueous solutions. In the professional field of chemistry, the acidity and alkalinity of an aqueous solution is expressed by the pH value. In the prior art, a pH electrode is used to test the pH value of an aqueous solution. The chemical amount of H+ ions in the measured solution is converted into a measurable electrical signal value through the pH-sensitive glass membrane. The composite pH electrode of Xiandu includes an internal reference electrode and an external reference electrode arranged in the shell, and the external reference electrode is soaked in the external reference electrolyte. The potential of the external reference electrode is kept constant by the concentration of the external reference electrolyte and the influen...

Claims

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Application Information

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IPC IPC(8): G01N27/30
CPCG01N27/301G01N27/302
Inventor 崔永海徐岭
Owner 上海博取仪器有限公司
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