Total organic carbon means the total organic materials which can be oxidized in the water. In other words, TOC refers to the milligrams of carbon in the organic pollutants per liter of water. For water with low organic materials, measuring the amount of total organic carbon is a good way to measure the amount of organic materials. The measurement method for TOC is to oxidize the organic carbon to carbon dioxide and then use an infrared detector to measure the concentration of carbon dioxide to calculate the equivalent of carbon.