glass electrode


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glass e·lec·trode

a thin-walled glass bulb containing a standard buffer solution, quinhydrone, and a platinum wire; when immersed in an unknown solution, a potential difference develops that varies with the pH of the unknown solution; this difference can be made to give the pH; used in pH meters.

glass electrode

In chemistry, a chemical sensor that uses a glass membrane as the sensing surface, as opposed to one that uses an organic or solid-state membrane. The glass contains materials in its structure that are sensitive to a material that is to be measured. In the case of a pH glass electrode, lithium ions are commonly used
See also: electrode
References in periodicals archive ?
By the fall of 1937, Beckman and his team at NTL had greatly improved their own manufactured glass electrodes.
The domed glass electrode uses the same formulation as the DolpHin sensor and is recommended for the harshest applications: temperatures up to 121 degrees C (250 F) and extremes of chemical concentrations.
2]O were used to deposit PPy film onto indium tin oxide (ITO)-coated glass electrodes at constant potential of +1.
Compared with salt meters employing glass electrodes, the ES-421 is easier to use and maintain, and more robust.
Two glass electrodes placed within the posterior and anterior regions of the left ventricle measure the tissue pH and temperature of the heart, sending information via signal wires to a monitor that displays the pH levels.