Introducing a New ASTM Method for the Determination of Total Nitrogen, and TKN by Calculation, in Water Samples

  Consisting of four models, including PC-controlled and standalone versions, the TOC-L uses Shimadzu’s 680° C combustion catalytic oxidation method to efficiently analyze all organic compounds. It features automatic sample acidification and sparging, as well as an automatic dilution function that reduces sample salinity, acidity and alkalinity. This significantly extends the use of catalysts and combustion tubes. The TOC-L Series features variable syringe sizes when the sample volume is limited. High-precision mass flow controllers ensure uninterrupted carrier gas for accurate analysis. A zero-maintenance Peltier cooler used for maximum water vapor removal ensures accurate analysis. In addition, an on-board air purifier may eliminate the need for high-purity air during testing. The optional salt kits permit 12 times more salt to be analyzed before maintenance is required. The ASI-L autosampler can use three different vial sizes for various applications, while the smaller OCT-L autosampler can use any vial size for up to 8 or 16 samples. TOC-L models can accept particulates up to 500 microns or 800 microns with the optional particulate kit. For larger particles, solids, soils and sludge, the SSM-5000 is the ideal solution. The TNM-L can be added for simultaneous TOC and Total Nitrogen analyses without increasing the size of the footprint.