TM19-02 New instrument validation of Shimadzu TOC-L, carbon analyzer using acidification with NDIR method of disolved inorganic carbon (DIC) in water samples

This memorandum provides instrument validation data for the determination of dissolved inorganic carbon (DIC) in filtered water samples using acidification and sparging with nondispersive infrared spectroscopy (NDIR) detection on Shimadzu TOC-L instrumentation. The validation data support the approval of the new instrument and new lab codes and method codes for DIC. Results from a paired sample study are provided to allow data users the ability to compare results from the new instrument with historical results. The new instrumentation for DIC analyses and analyte information were implemented July 1, 2018.