Applications of Conductometry:

The high sensitivity of the conductometric measurements makes it an important analytical tool for environmental analysis and certain other applications. A continuous or spot check measurement of conductance is employed, usually, with a dip electrode cell and meter. In some cases continuous recording of conductance is also employed. Since conductance depends on ionic concentrations, the purity of steam distillate, demineralized water, and the ionic contents of raw water can be checked with measuring conductance directly.  Metal companies, electroplating baths and rinse baths are monitored by conductance methods.

Perhaps the most common application of direct condutometry has been for estimating the purity of distilled water.  Kohlrausch along with a painstaking work after 42 successive distillations of water in vocuo obtained a conductivity water with specific conductance, κ = 4.3 × 10^-8 S cm^-1 at 18 °C. Traces of an ionic impurity will rise the conductance appreciably.  Normal distilled water in equilibrium with the carbon dioxide of the air has a conductivity of about 7.0 ×10^-7 S cm^-1.  The sea water has much higher value of conductivity and the conductometric measurements are widely used to check the salinity of water in oceanography.

Measuring conductance of soil helps in finding the moisture content of soils at various places with portable instruments.  All soils contain varying amount of water soluble salts upto 0.1% or even more. These salts are usually present as sulphate, chloride, carbonate or bicarbonate of sodium, potassium, calcium and magnesium and contribute to the conductance of the soil.  The soil might be classed as saline and non- saline depending on the nature and quantity of the salts present.  Conductivity of a saturated extract with water of saline soil at 25 °C has conductivity greater than 4 mS cm^-1.