TITLE 40 - PROTECTION OF ENVIRONMENT

CHAPTER I - ENVIRONMENTAL PROTECTION AGENCY

SUBCHAPTER C - AIR PROGRAMS

PART 91 - CONTROL OF EMISSIONS FROM MARINE SPARK - IGNITION ENGINES

subpart e - GASEOUS EXHAUST TEST PROCEDURES

91.415 - Raw gaseous sampling procedures.

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.