Table D-1-Performance Specifications for PM10 Samplers
Performance parameter | Units | Specification |
1. Sampling effectiveness: | ||
A. Liquid particles | Percent | Such that the expected mass concentration is within ±10 percent of that predicted for the ideal sampler. |
B. Solid particles | Percent | Sampling effectiveness is no more than 5 percent above that obtained for liquid particles of same size. |
2. 50 Percent cutpoint | [MICRO]m | 10±[MICRO].5 [MICRO]m aerodynamic diameter. |
3. Precision | [MICRO]g/m3 or percent | 5 [MICRO]g/m3 or 7 percent for three collocated samplers. |
4. Flow rate stability | Percent | Average flow rate over 24 hours within ±5 percent of initial flow rate; all measured flow rates over 24 hours within ±10 percent of initial flow rate. |
* The sampling effectiveness curve for this "ideal" sampler is described by column 5 of table D-3 and is based on a model that approximates the penetration of particles into the human respiratory tract. Additional information on this model may be found in a document entitled, "Particle Collection Criteria for 10 Micrometer Samplers," which is available from the Quality Assurance Division (MD-77), Environmental Monitoring Systems Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711.
40 C.F.R. §53.40