The Total Organic Carbon TOC analyzers TOC−LCHSShimadzu,ASIandTotalNitrogen adopts the 680°C combustion catalytic oxidation method, while providing an ultra wide range of 4 μg/L to 30,000 mg/L, these analyzers have a detection limit of 4 μg/L through coordination with NDIR. This is the highest level of detection sensitivity available with the combustion catalytic oxidation method. This method makes it possible to efficiently oxidize not only easily-decomposed, low-molecular-weight organic compounds, but also hard-to-decompose insoluble and macromolecular organic compounds. 

Simultaneous TN determination using the TNM-L Based on the similar oxidation process, the TN determination can be carried out simultaneously with the TOC measurement. For this application, the TNM-L option is installed on the main TOC-L system.