§53.21. Test conditions. — Inbound Citations

40 C.F.R. § 53.21

Statutory Authority

Cited by 2 regulations in release 2026-08-27.

40 C.F.R. § 53.20(e)

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(e) If necessary, all measurement response readings to be recorded shall be converted to concentration units or adjusted according to the calibration curve constructed in accordance with § 53.21(b).
40 C.F.R. § 53.23(a)(2)

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(2) Determine and submit a suitable calibration curve, as specified in § 53.21(b), showing the test analyzer's measurement response over at least 95 percent of the required or indicated measurement range.