Dear ahmedezat,
I’m really assured that you know; Conductivity needs a current to be measured,
so you may got problems with electrolysis and polarisation potential, I think.
To avoid this “unlike”, misleading effects the industry uses “alternate current”
of low frequency (Common 50 Hz or 100Hz OR 60Hz or 120Hz; Why?).
For more comparable measurements often 500Hz has been “standardised”.
But keep care, it’s a method, which is influenced by several parameters, like
Temperature, Water-quality, and of course Frequency (Why again?), ?etc.?.
Don’t forget the blank, it’s a method it depends very strong on!
Question: By what concentration is the Conductivity a maximum?
Good Luck!
ARGOS++