In 2013, the EPA initiated an evaluation of commercially available automated gas chromatographs for potential use in the Photochemical Assessments Monitoring Stations program. The study included a laboratory evaluation of eight systems. Based on the results of the laboratory study, a field evaluation of the six best performing systems was conducted. This page contains links to the final reports for the laboratory and field evaluations.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
Gas Chromatograph Evaluation Study - Laboratory Evaluation Phase Report (PDF)(124 pp, 9 MB,
October 3, 2014)
Final report for laboratory phase
Gas Chromatograph Evaluation Study - Field Evaluation Phase Report (PDF)(84 pp, 10 MB,
February 28, 2017)
Final report for field phase