wtw inoLab Cond Level 1 Operating Manual page 48

Lists
Resistance
Salinity
Temperature
compensation (TC)
Test sample
Total dissolved
solids (TDS)
48
All substances (solids, liquids, or gases) with mobile charge
carriers like for example electrons or ions have a finite ohmic
resistance, which means they have an electric conductance
that can be measured or an electric conducitivtiy.
The salinity is a sum parameter especially for seawater;
it gives the salt content of seawater.
The temperature has a very strong impact on the electrical
conductivity. To be able to compare measured values, it is
necessary to temper or convert the test sample to a refer-
ence temperature.
The substance to be measured. It can be liquid or solid.
Mass that remains of the substances dissolved in an aque-
ous solution after a fixed filtering and drying procedure, as
far as these substances are not volatile under the conditions
of this procedure. The total dissolved solids refer to the vol-
ume of the filtered aqueous sample used und are given in
mg/l.