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What Is Alkaline Error? |
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Answer» In the alkaline region of pH10 or more, the emf of a GLASS electrode DEVIATES from the linear value on the alkaline side. This is called the “alkaline ERROR.” Because the magnitude of the alkaline error VARIES depending on the glass membrane compositions, a glass electrode for high alkalinity should be used if the pH SENSOR is used in the alkaline region. However, this does not guarantee that the alkaline error is eliminated. In the alkaline region of pH10 or more, the emf of a glass electrode deviates from the linear value on the alkaline side. This is called the “alkaline error.” Because the magnitude of the alkaline error varies depending on the glass membrane compositions, a glass electrode for high alkalinity should be used if the pH sensor is used in the alkaline region. However, this does not guarantee that the alkaline error is eliminated. |
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