The main difference between TOC technologies is how they oxidize organics.

TOC Technologies

All Total Organic Carbon (TOC) analyzers perform two functions: oxidizing organic carbon in water to CO2 and measuring the CO2 produced. What makes each TOC analyzer different is the method it uses to oxidize the organics in the water sample and the methods used to detect the resulting CO2.

Main Detection Methods

The three main methods of CO2 detection used commercially are:

  1. Non-dispersive infrared (NDIR)
  2. Direct Conductometric (Non-selective Conductometric)
  3. Membrane Conductometric Detection (Selective Conductometric)

NDIR TOC detectors measure CO2 in the gaseous phase, while conductometric TOC detectors measure CO2 in the liquid phase.