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by Donald Normandin on 01/06/05 at 13:33:00

Does anyone know the dirrect relation of conductivity to Total disolved solids(CaCO3)?

Re: Water
by Robert Fogt on 01/11/05 at 23:44:37


I found this site here:

About the relationship between TDS and conductivity, it says this:
4. Conductivity is usually about 100 times the total cations or anions expressed as equivalents. Total dissolved solids (TDS) in ppm usually ranges from 0.5 to 1.0 times the electrical conductivity.

Re: Water
by Joshua Woods on 01/13/05 at 20:58:28

I do not know if this will help, but if you are talking about a freshwater environment, you can convert conductivity to TDS by multiplying your conductivity in ums by 0.65

I got it from "Applied Aquatic Ecosystem Concepts" by Gerald L. Mackie, 2001

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