Ecotech HiVol 3000

Introduction HiVol 3000 User manual 1.7
8
Figure 2 Cross-section of PM
10
Size-Selective Inlet Hood
1.4.4 Particulate Matter Standards
1.4.4.1 U.S. EPA Ambient Particulate Standards.
The U.S. EPA primary standards for PM
10
are:
24 hour average 150µg/std m
3
Annual average 50µg/std m
3
EPA reference Conditions:
Standard temperature defined as 298K (25°C)
Standard pressure defined as 101.3 kPa (760mm Hg)
The U.S. EPA primary standards for PM
2.5
are:
3-year average of 98th percentile of 24 hour average
65µg/std m
3
3-year average of annual average mean
15µg/std m
3
The total volume of air sampled is determined by the sampler from the
measured flow rate at actual ambient temperature and pressure and the
sampling time.
Note: The U.S. EPA reference method for PM
2.5
is the method
specified in the U.S. EPA Code of Federal Regulations 40 Part
50 Appendix L; Federal Reference Method for the Determination
of Fine Particulate Matter as PM
2.5
in the Atmosphere.