40 CFR Part 53, Table F-4

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗

Particle Aerodynamic Diameter (µm)	Test Sampler	Ideal Sampler
Fractional 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)
(1)	(2)	(3) \| (4) \| (5) \| (6) \| (7)
<0.500	1	6.001 \| \| 1 \| 6.001 \| 6.001
0.625	\| 2.129	\| 0.999 \| 2.129 \| 2.127
0.75	\| 0.982	\| 0.998 \| 0.982 \| 0.98
0.875	\| 0.73	\| 0.997 \| 0.73 \| 0.728
1	\| 0.551	\| 0.995 \| 0.551 \| 0.548
1.125	\| 0.428	\| 0.991 \| 0.428 \| 0.424
1.25	\| 0.346	\| 0.987 \| 0.346 \| 0.342
1.375	\| 0.294	\| 0.98 \| 0.294 \| 0.288
1.5	\| 0.264	\| 0.969 \| 0.264 \| 0.256
1.675	\| 0.251	\| 0.954 \| 0.251 \| 0.239
1.75	\| 0.25	\| 0.932 \| 0.25 \| 0.233
1.875	\| 0.258	\| 0.899 \| 0.258 \| 0.232
2	\| 0.272	\| 0.854 \| 0.272 \| 0.232
2.125	\| 0.292	\| 0.791 \| 0.292 \| 0.231
2.25	\| 0.314	\| 0.707 \| 0.314 \| 0.222
2.375	\| 0.339	\| 0.602 \| 0.339 \| 0.204
2.5	\| 0.366	\| 0.48 \| 0.366 \| 0.176
2.625	\| 0.394	\| 0.351 \| 0.394 \| 0.138
2.75	\| 0.422	\| 0.23 \| 0.422 \| 0.097
2.875	\| 0.449	\| 0.133 \| 0.449 \| 0.06
3	\| 0.477	\| 0.067 \| 0.477 \| 0.032
3.125	\| 0.504	\| 0.03 \| 0.504 \| 0.015
3.25	\| 0.53	\| 0.012 \| 0.53 \| 0.006
3.375	\| 0.555	\| 0.004 \| 0.555 \| 0.002
3.5	\| 0.579	\| 0.001 \| 0.579 \| 0.001
3.625	\| 0.602	\| 0 \| 0.602 \| 0
3.75	\| 0.624	\| 0 \| 0.624 \| 0
3.875	\| 0.644	\| 0 \| 0.644 \| 0
4	\| 0.663	\| 0 \| 0.663 \| 0
4.125	\| 0.681	\| 0 \| 0.681 \| 0
4.25	\| 0.697	\| 0 \| 0.697 \| 0
4.375	\| 0.712	\| 0 \| 0.712 \| 0
4.5	\| 0.726	\| 0 \| 0.726 \| 0
4.625	\| 0.738	\| 0 \| 0.738 \| 0
4.75	\| 0.75	\| 0 \| 0.75 \| 0
4.875	\| 0.76	\| 0 \| 0.76 \| 0
5	\| 0.769	\| 0 \| 0.769 \| 0
5.125	\| 0.777	\| 0 \| 0.777 \| 0
5.25	\| 0.783	\| 0 \| 0.783 \| 0
5.375	\| 0.789	\| 0 \| 0.789 \| 0
5.5	\| 0.794	\| 0 \| 0.794 \| 0
5.625	\| 0.798	\| 0 \| 0.798 \| 0
5.75	\| 0.801	\| 0 \| 0.801 \| 0
		Csam(exp)= \| \| \| Cideal(exp)= \| 13.814