{"data":{"id":"us/40-cfr-table-f-5-to-subpart-f-of-part-53","jurisdiction":"us","citation":"40 CFR Table F-5 to Subpart F of Part 53","heading":"Table F-5 to Subpart F of Part 53—Estimated Mass Concentration Measurement of PM 2.5 for Idealized “Typical” Coarse Aerosol Size Distribution","body":"Particle Aerodynamic Diameter (µm) Test Sampler Ideal Sampler\nFractional Sampling Effectiveness Interval Mass Concentration (µg/m3) Estimated Mass Concentration Measurement (µg/m3) Fractional Sampling Effectiveness Interval Mass Concentration (µg/m3) Estimated Mass Concentration Measurement (µg/m3)\n(1) (2) (3) (4) (5) (6) (7)\n\u003c0.500 1.000 16.651 1.000 16.651 16.651\n0.625 5.899 0.999 5.899 5.893\n0.750 2.708 0.998 2.708 2.703\n0.875 1.996 0.997 1.996 1.990\n1.000 1.478 0.995 1.478 1.471\n1.125 1.108 0.991 1.108 1.098\n1.250 0.846 0.987 0.846 0.835\n1.375 0.661 0.980 0.661 0.648\n1.500 0.532 0.969 0.532 0.516\n1.675 0.444 0.954 0.444 0.424\n1.750 0.384 0.932 0.384 0.358\n1.875 0.347 0.899 0.347 0.312\n2.000 0.325 0.854 0.325 0.277\n2.125 0.314 0.791 0.314 0.248\n2.250 0.312 0.707 0.312 0.221\n2.375 0.316 0.602 0.316 0.190\n2.500 0.325 0.480 0.325 0.156\n2.625 0.336 0.351 0.336 0.118\n2.750 0.350 0.230 0.350 0.081\n2.875 0.366 0.133 0.366 0.049\n3.000 0.382 0.067 0.382 0.026\n3.125 0.399 0.030 0.399 0.012\n3.250 0.416 0.012 0.416 0.005\n3.375 0.432 0.004 0.432 0.002\n3.500 0.449 0.001 0.449 0.000000\n3.625 0.464 0.000000 0.464 0.000000\n3.750 0.480 0.000000 0.480 0.000000\n3.875 0.494 0.000000 0.494 0.000000\n4.000 0.507 0.000000 0.507 0.000000\n4.125 0.520 0.000000 0.520 0.000000\n4.250 0.000000 0.532 0.000000\n4.375 0.000000 0.543 0.000000\n4.500 0.000000 0.553 0.000000\n4.625 0.000000 0.562 0.000000\n4.750 0.000000 0.570 0.000000\n4.875 0.000000 0.577 0.000000\n5.000 0.000000 0.584 0.000000\n5.125 0.000000 0.590 0.000000\n5.250 0.000000 0.595 0.000000\n5.375 0.000000 0.599 0.000000\n5.500 0.000000 0.603 0.000000\n5.625 0.000000 0.605 0.000000\n5.75 0.000000 0.608 0.000000\nCsam(exp)= Cideal(exp)= 34.284","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"0b14a23fdfbce8b818e17476ac71231617022ecbe0834069d0effb5fbf7c77d6","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-f-4-to-subpart-f-of-part-53","next":"us/40-cfr-table-f-6-to-subpart-f-of-part-53"},"notice":"GroundRules: Original legal text. Not legal advice."}