GroundRules
40 CFR 1065.790: Mass standards.
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER U—AIR POLLUTION CONTROLS
- PART 1065—ENGINE-TESTING PROCEDURES
- Subpart H—Engine Fluids, Test Fuels, Analytical Gases and Other Calibration Standards
(a) PM balance calibration weights. Use PM balance calibration weights that are certified as NIST-traceable within ±0.1% uncertainty. Make sure your highest calibration weight has no more than ten times the mass of an unused PM-sample medium.
(b) Dynamometer, fuel mass scale, and DEF mass scale calibration weights. Use dynamometer and mass scale calibration weights that are certified as NIST-traceable within ±0.1% uncertainty.
Collected 2026-08-27T02:26:04Z. Source file · JSON