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Total organic carbon (TOC) indicates the total amount of carbon from organic material present in a sample. The advantages of TOC analysis are the fast analysis time of a few minutes, the exact and matrix-independent quantification and the very low consumption of chemicals. Since this is a sum parameter, the method is not suitable for identifying individual organic components. TOC is mostly determined in liquids where it serves as a representative index for water quality but can also be measured in solids.