Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Table F-2 to Subpart F of Part 53: Table F-2 to Subpart F of Part 53—Particle Sizes and Wind Speeds for Full Wind Tunnel Test, Wind Tunnel Inlet Aspiration Test, and Static Chamber Test

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER C—AIR PROGRAMS
PART 53—AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS
Subpart F—Procedures for Testing Performance Characteristics of Class II Equivalent Methods for PM 2.5

Primary Partical Mean Size a (µm) Full Wind Tunnel Test Inlet Aspiration Test Static Fractionator Test Volatility Test

2 km/hr 24 km/hr 2 km/hr 24 km/hr

1.5±0.25 S S S

2.0±0.25 S S S

2.2±0.25 S S S

2.5±0.25 S S S

2.8±0.25 S S S

3.0±0.25 L L

3.5±0.25 S S S

4.0±0.5 S S S

Polydisperse Glycerol Aerosol L

a Aerodynamic diameter.

S = Solid particles.

L = Liquid particles.

Collected 2026-08-27T02:26:04Z. Source file · JSON