The regulations dictate specific equipment and methodologies for reformulated gasoline analysis. We recommend that the EPA only specify the precision or level of accuracy it requires and let the chemist or laboratory decide which method and type of equipment they will employ for the required analysis.

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Although this may be possible at some time in the future, at the present time, tolerance issues dictate that we specify equipment and method. (7/1/94)

This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (pdf) (18.2 MB, July 2003, EPA420-R-03-009)