Stack Sample Analysis

Stack Sample Analysis
Stack Sample Testing
Stack Testing Lab

Stack emissions are tightly regulated by USEPA and individual state agencies. For some stacks, PM10 and PM2.5 can be easily determined by weighing of size-separated fractions collected by cascade impactor or Method 201A cyclone samplers. But with improved particulate control technology, many stacks are now so clean that it is difficult for stack testers to use these gravimetric-based particle size measurement methods. Furthermore, many emissions sources are not suited for cascade impactors or cyclones. High temperatures, high moisture content, or cyclonic flow conditions may render these gravimetric techniques impractical or invalid.

To help stack testers and their clients determine particle size distributions for these sources, MVA Scientific Consultants has developed microscopy-based methods of particle size distribution measurements.

These methods have provided valuable compliance data for power generators, boiler operators, cement kilns, waste incinerators and other operations where particulate emissions must be controlled. These methods can also be used to determine the particle size distributions in engineering studies, providing particle size data for use in design and optimization of emission control systems.

Stack testers and their clients may also want to know:
  • What is in their particulate emission samples?
  • Why are they out of compliance?
  • Where in the process do the particles or M202 condensables come from?

MVA can help answer these questions using the same microscopy based particle characterization techniques.