All materials soluted in water that are available as ions create the
Electric power is conducted better if more ions are available. This makes the conductance a unit
to measure the density of the water.
The type of material which produces the conductance however cannot be specified that way.
The conductance and its value bear far reaching consequences for the materials which come in contact
with the water.
The conductance is mainly due to soluted salts, the height of its value can lead to the corrosiveness
of the water.
The rule of thumb is: High conductance high corrosiveness, low conductance low corrosiveness.