1. LawStack
  2. Title 40 - Protection of Environment
  3. Chapter I - ENVIRONMENTAL PROTECTION AGENCY
  4. Subchapter C - AIR PROGRAMS
  5. Part 91 - CONTROL OF EMISSIONS FROM MARINE SPARK-IGNITION ENGINES
  6. Subpart E - Gaseous Exhaust Test Procedures
  7. 40 CFR § 91.415
40 CFR § 91.415
Raw gaseous sampling procedures
June 9, 2020
CFR

Fit all heated sampling lines with a heated filter to extract solid particles from the flow of gas required for analysis. The sample line for HC measurement must be heated. The sample line for CO, CO2, and NOX may be heated or unheated.

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§ 91.414 Raw gaseous exhaust sampling and analytical system description
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§ 91.416 Intake air flow measurement specifications

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