TOC (Total Organic Carbon)

TOC is a measure of the total amount of carbon present in a water sample.

High TOC in raw water comes from decaying natural organic matter (NOM) as well as synthetic sources.

Before raw water is treated TOC provides an estimate of the amount of NOM in it.

In treated water, TOC can be a valuable measurement in estimating the likelihood of chlorinated disinfection byproducts (DBPs) forming.


It is a common measurement in water treatment plants as it It is traditionally determined in a laboratory which is a time consuming and skilled procedure. By utilising UV-Vis spectroscopy, TOC can be estimated in real time allowing process control.


In wastewater treatment works, TOC can be a useful parameter to monitor on the inlet to give a better understanding of incoming loads.

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Products for this application

s::can spectro::lyser

An online multi-parameter UV-Vis spectrophotometer for TOC measurement

s::can carbo::lyser

An online sensor for organic carbon measurement for water and wastewater treatment.

s::can i::scan

An online compact multi-parameter sensor for TOC determination.

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