The total organic carbon (TOC) analyzer enables quantification of the amount of total organic carbon (TOC), total inorganic carbon (IC), and total carbon in aqueous samples (TC). The EMES operates a Shimadzu TOC-L CSN Total Organic Carbon Analyzer within the Shimadzu Environmental Research Laboratory. The TOC-L utilizes a combustion catalytic oxidation method paired with a nondispersive infrared (NDIR) gas analyzer enabling complete oxidation of difficult to decompose samples and detection limits as low as 4 ug/L. Total organic carbon can be analyzed utilizing the non-purgeable organic carbon (NPOC) or the total carbon minus inorganic carbon (TC-IC) method. Total carbon and inorganic carbon may also be analyzed using standalone methods. The TOC-L is equipped with an OCT-L 8-port auto-sampler allowing continuous measurement of up to eight samples.