Yokogawa EXAxt SC450 4-Wire Analyzer for Conductivity/Resistivity - Manual (Page 60)

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IM 12D08N05-01E
If it is more convenient, the user may make solutions from Sodium Chloride (NaCl or common
table salt) with the help of the following relationship table. This table is derived from the IEC norm
60746-3.
Table 11-3. NaCl values at 25 °C
Weight % mg/kg Conductivity
0.001 10 21.4 µS/cm
0.003 30 64.0 µS/cm
0.005 50 106 µS/cm
0.01 100 210 µS/cm
0.03 300 617 µS/cm
0.05 500 1.03 mS/cm
0.1 1000 1.99 mS/cm
0.3 3000 5.69 mS/cm
0.5 5000 9.48 mS/cm
1 10000 17.6 mS/cm
3 30000 48.6 mS/cm
5 50000 81.0 mS/cm
10 100000 140 mS/cm
Note!
For resistivity measurement the standard resistivity units of the calibration solution can be calcu-
lated as follows:
R = 1000/G (kΩ•cm if G = µS/cm)
Example: 0.001% weight R = 1000/21.4 = 46.7 kΩ•cm