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Which of these is not an ion-selective electrode?

(a) Thermistors

(b) Glass electrodes

(c) Glass pH electrodes

(d) Solid-state electrodes

The question was asked in an online interview.

Enquiry is from Potentiometric Biosensors in division Biosensors of Enzyme Technology

1 Answer

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Best answer
The correct answer is (a) Thermistors

For explanation I would say: Thermistors are used in calorimetric biosensor to measure the heat generated during the reaction. Hence it is not an ion-selective electrode. Glass electrodes, glass pH electrodes and solid-state electrodes are types ion-selective electrodes that are used in the potentiometric biosensor.

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