What type of electrode is used to measure calcium and sodium?
a. Clark c. Polarographic
b. Ion-selective d. Glucose-oxidase
ANS: B
The sensors used for electrolyte measurements are ion-selective electrodes. A Clark electrode is used to measure the partial pressure of oxygen in the blood. A polarographic electrode is a Clark electrode. Glucose-oxidase is an enzyme that is used to coat the ion-selective electrode used to measure glucose.
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