Code of Federal Regulations (Last Updated: November 8, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 53 - Ambient Air Monitoring Reference and Equivalent Methods |
Subpart E - Procedures for Testing Physical (Design) and Performance Characteristics of Reference Methods and Class I and Class II Equivalent Methods for PM 2.5 or PM 10-2.5 |
Table E-2 to Subpart E of Part 53 - Spectral Energy Distribution and Permitted Tolerance for Conducting Radiative Tests
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Table E-2 to Subpart E of Part 53 - Spectral Energy Distribution and Permitted Tolerance for Conducting Radiative Tests
Characteristic Spectral Region Ultraviolet Visible Infrared Bandwidth (µm) 0.28 to 0.32 0.32 to 0.40 0.40 to 0.78 0.78 to 3.00 Irradiance (W/m2) 5 56 450 to 550 439 Allowed Tolerance ±35% ±25% ±10% ±10% [62 FR 38799, July 18, 1997; 63 FR 7714, Feb. 17, 1998]