How can I calculate the relation between TDS and conductivity?

Document ID

Document ID TE10222

Published Date

Published Date 04/11/2019
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Question
How can I calculate the relation between TDS and conductivity?
Summary
Calculation between TDS and conductivity
Answer

The normal calculation of TDS is:

TDS (mg/L) = a × conductivity (µS/cm)

where a is a factor between 0,5 and 0,7

 

To calculate the TDS roughly you can say:  

1 ppm ( mg/l ) = 2 µS/cm

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