Accurate Conductivity measurement

Conductivity measurement and liquid temperature

In general, the conductivity of a solution varies significantly depending on the temperature of the liquid. When carrying out conductivity measurement, liquid temperature should be controlled as accurately as possible.

• Measurement using a constant temperature bath:
  Carry out measurements whilst maintaining the sample liquid temperature at 25°C using a constant temperature bath.
  In order to ensure that the cell temperature is equal to the sample liquid temperature, immerse the cell in the sample for an appropriate period prior to performing measurements.
• Measurement at room temperature:
  When carrying out measurement at room temperature, avoid locations where the temperature may change.
  In order to ensure that the cell temperature is equal to the sample liquid temperature, immerse the cell in the sample for an appropriate period prior to performing measurements.

Precautions when immersing the cell in the sample liquid

1. Use a thoroughly cleaned conductivity cell.
2. Immerse the cell in the sample such that the electrode plates are completely submerged in the liquid.
3. If air bubbles remain between the outer cylinder and supporting tube, remove them by shaking the cell.

Relation page  Measurement of Conductivity