what is principal of karl ficher instrument!
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Answer Posted / m. r. sinha
The property of karl fischer reagent is to absorb water, its
strength is generally mentioned on the bottle or can be
determined. Now, as it is being dissolved into the sample it
absorbs the water content of the sample and the solution
becomes water free and works as electrolyte solution and the
two electrodes complete the circuit (as it is dipped into
the solution) and gives signal to stop the flow of KF
reagent. With the help of KF volume (strength already known,
the water content in the sample is determined.
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