PM₁ Sharp Cut Cyclone

SCC2.229 Cyclone

SCC2.229 Disassembled

SCC2.229 with PM_2.5 Inlet

Applications

• Ambient PM1 sampling
• Indoor Air Quality sampling
• Speciation sampling
• PM₁ "Type 3" sampling
  

Features

• Dry sampling
• Atmospheric and chemically inert clear anodize finish on aluminum alloy
• Field cleanable

Downloads

• Download the latest version of the instruction manual.
  Click here and then click on manual # 11.
• Microsoft Excel calculator containing:
  1. Excel calculator and graph of SCC vs D50 (flowrate input)
  2. Excel calculator and graph of VSCC vs D50 (flowrate input)
  3. Graph of VSCC vs EPA WINS impactor

The Sharp Cut Cyclone (SCC) for EPA type PM_2.5 sampling was developed and tested for non-EPA designated sampling applications wherein dry sampling is imperative (speciation) or long intervals without cleaning were essential (continuous monitoring). The details and references pertaining to this development are presented on the PM_2.5 Sharp Cut Cyclone page of this website.

PM₁ sampling has no official status at this time. However, there are reasons why this further development of the SCC family was carried out.

A recent paper by C. Sioutas et al (1999) on the development of the personal PM1 sampler acknowledged that the work was carried out under an EPA subcontract, thus indicating a glimmering of interest.

Note has recently been taken of the finding that, in many areas wherein PM₁₀ and PM_2.5 sampling is co-located there is little or no difference between the two concentrations. This clearly indicates that there is no coarse fraction and everything is below PM_2.5. The ability to measure PM₁ offers an opportunity to discern what "lies below", and will offer a valuable tool for investigative health effect studies.

Utilizing techniques developed by Kenny et al (1997) which led to the development of the PM_2.5 SCC and reported by Kenny et al (2000), further research was carried out to develop a PM₁ SCC. Using the SCC model, a new design was constructed and tested for size selectivity (Gussman, 2000). The cyclone that evolved has a slightly shaper cut than the PM_2.5 model.

The unit is available as a research tool and has not been the subject of loading or ambient studies.

References

1. C. Sioutas, et al. "Design and Experimental Characterization of a PM1 and a PM2.5 Personal Sampler", J. Aerosol Sci 30 (6) pp. 693-707, 1999
2. L.C. Kenny et al. "Characterization and Modeling of a Family of Cyclone Aerosol Preseperators", J. Aerosol Sci 28(4), pp. 667-688, 1997
3. L.C. Kenny et al. "Development of a Sharp-Cut Cyclone for Ambient Aerosol Monitoring Applications" J. Aerosol Sci. & Tech. 32(4), pp 338-358, April 2000
4. R. Gussman -- BGI Tech Report. "Evaluation of a Sharp Cut Cyclone for PM1 Sampling", Jan. 2000. (Click here to download report in Adobe Acrobat format)
5. R.A. Gussman, L.C. Kenny, M. Labickas and P. Norton "Design, Calibration and Field Test of a Cyclone for PM1 Ambient Air Sampling", J. Aerosol Sci and Tech., Vol. 36, No. 3, pp. 361-365, 2002.