IC Controls Ltd.

Total Dissolved Solids (TDS) Measurement

Courtesy of IC Controls Ltd.


Total Dissolved Solids (TDS) is a measure of the sum of all inorganic and organic substances in a liquid in molecular, ionized or micro-granular colloidal suspended form. The solids must be small enough to survive filtration through a sieve the size of two micrometer.  TDS solids are normally found in all freshwater systems. Major applications of TDS are: at low levels the study of water quality for streams, rivers, lakes, potable water taste, and at high levels the control of scale in recirculating water systems. It is a quality indicator for drinking water and is a general measure of the presence of chemicals. In seawater RO desalination, TDS provides a way of comparing the feed with the permeate quality that is relevant to drinking water taste standards. 

Main questions are:

  • What is it?

  • Where does it come from?

  • TDS in Water Systems.

  • TDS Measurement Methods.

  • TDS in Boilers.

  • Grab Sampling for off line processes.

  • What is it meant by neutralized processes?

  • What is the relationship between TDS and Conductivity?

  • What is the different between pm and mg/L?

  • How to Calibrate a TDS Analzyer.

  • What is needed for - Boiler TDS.

  • What is needed for – Drinking Water

  • What is needed for – Reverse Osmosis Permeate Taste Monitoring

  • What is needed for – Contaminated Condensate Diversion or Recovery

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