Question

While using reference electrodes, the internal liquid level should always be kept above that of the sample solution.

(a) True

(b) False

The question was asked by my school principal while I was bunking the class.

Enquiry is from Secondary Reference Electrodes in section pH Meters and Ion Analysers of Analytical Instrumentation

Answer 1

The correct option is (a) True

To explain I would say: While using reference electrodes, the internal liquid level should always be kept above that of the sample solution. This is done to prevent contamination of the electrolyte solution.