IMO, measuring the conductivity is useful only to judge the purity of the
water. While it does indirectly indicate TDS and/or salinity to some
degree, there are better ways to measure those. A conductivity meter on the
output of a RO/DI system is a great way to see if the output is pure, and it
needs no calibration or cleaning.


"Mean_Chlorine" wrote in message
...
Thusly "NetMax" Spake Unto All:

TDS is a (roundabout and ambiguous) measure of the electrical
conductivity of a water, which in turn is a measure of the salinity of
the water.

I think your intro is reversed, it should read:
"Measuring the electrical conductivity of water is a roundabout method of
determining the level of TDS."

I don't really see that. I mean, yeah, it's good to know the
conductivity of the water, and yeah, the conductivity is dependent on
the amount of dissolved salts.
I just question the use of measuring conductivity but expressing it as
fictional milligrams of the wrong salt per liter. I really don't see
the point.