Currently the US EPA has not promulgated a single method for the analysis of Total Nitrogen (TN). Most states that have TN regulations require permitee's to measure TN as the composite of TKN, Nitrate and Nitrite. This approach is costly, time consuming, and susceptible to variability based on the methods used for the individual analytes. We are excited to announce the introduction of a Total Nitrogen Test Method consisting of a single spectrophotometric test kit. The method has been evaluated in a multilab study and this webinar will present the results of that study as well as an overview of the savings made possible by utilizing this new method for testing Total Nitrogen.