To assist refiners in determining the aromatic content of diesel fuels, AC Analytical Controls developed a fast, robust and easy-to-use system: The AC Mid Distillates Analyzer (MDA). The MDA system (IP 391-2001) incorporates the high performance liquid chromatography (HPLC) technology to detect:  Mono-ring aromatics Di-ring aromatics Poly-ring aromatics Total aromatics in diesel fuels and petroleum distillates in the 150C to 400C (752F) range within 25 minutes.