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.
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Gas Chromatograph Evaluation Study - Laboratory Evaluation Phase Report (PDF)(124 pp, 9 MB,
October 3, 2014)
Final report for laboratory phase
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Gas Chromatograph Evaluation Study - Field Evaluation Phase Report (PDF)(84 pp, 10 MB,
February 28, 2017)
Final report for field phase