Applicable Measuring Range of Two-Electrode Type Commercial Electrolytic Conductivity Meter for Accurate Determination of Electrolytic Conductivity

Figure 7

The difference between resistance at each frequency and resistance at 10 kHz. The values of resistance were measured by ECM-1 with 0.5 mol kg^-1 (yellow open triangle), 1 mol kg^-1 (orange open circle), and 3 mol kg^-1 (red open square) KCl aqueous solution in the frequency range from 10 kHz to 625 kHz.