§1065.267 Gas chromatograph with a flame ionization detector.

(a) Application. You may use a gas chromatograph with a flame ionization detector (GC-FID) to measure CH₄ and C₂H₆ concentrations of diluted exhaust for batch sampling. While you may also use a nonmethane cutter to measure CH₄, as described in §1065.265, use a reference procedure based on a gas chromatograph for comparison with any proposed alternate measurement procedure under §1065.10.

(b) Component requirements. We recommend that you use a GC-FID that meets the specifications in §1065.205 and that the measurement be done according to SAE J1151 (incorporated by reference, see §1065.1010). The GC-FID must meet the linearity verification in §1065.307.