EPA Method 5 - Particulate Emissions
- Heated out of stack filter (M5).
- "Condensible" particulates pass through the filter and condense in impingers. Can readily be combined with a CPM Method.
- Tester may adjust out-of-stack filter temperature to suit source specific conditions.
- Particulate Matter (PM) -- those substances retained in the sampling nozzle/probe and on a heated filter.
- During sampling a filter is maintained at a specified temperature (248oF + 25oF)
- Do not use silicone grease - it can be soluble in the probe rinse and can bias the PM value high.
- Run the train isokinetically.
- Stainless steel nozzles should be used with great care, port scrapings can bias results high.
- Acetone must be shipped as a hazardous material. Please call for IATA codes if you need them.
- Samples may be shipped at ambient temperatures.
- It may prove more economical to keep acetone rinses separate, ship other samples normally, and the acetone as hazardous.
- Be sure to include a chain of custody for each shipping container.
- This method is the EPA's Go-To method for particulate matter emissions;
- Almost all other test methods are based on the sampling train used for this method.
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