extend the range Of the meter by a few decades (Andersson successfully for the measurement of relaxation times of

4.2 Calibration Calibration of the instrument is performed easily and accounts for the k factor outlined in equation (1) and table 1. The measuring circuit is made compatible with all sample holders by choosing RO so that k is equal for all sample holders. Calibration can also be done experimentally by replacing the sample with suitably selected resistor chains. 4.3 Accuracy Because of the purpose of the measurement the meter was not designed to be a high-accuracy instrument. Through the nine decades the accuracy is better than ++ decade. The main reasons for this inaccuracy are the non-ideal logarithmic amplifier and the various stray currents, especially capacitive ones, in the sample holder. However, it is possible to increase the accuracy and extend the range of the meter easily by eliminating stray currents and by enlarging the signal levels. Acknowledgments