Assisting Stack Testers
Through Microscopy: A Case Study
THE PROBLEM: How do you provide particle size information for a source that is so clean you cannot get enough sample to weigh? Or you have already collected a sample and now particle size information is required? Perhaps you need customized particle size distribution information for an engineering study?
THE ANALYSIS: Automated scanning electron microscopy can provide particle size and shape analysis for thousands of individual particles in a stack sample, providing statistically robust particle size information for very lightly loaded samples, for other stack samples collected on filters.
THE IMAGE: The image to the top right shows a dispersion of stack particles on a filter.
THE OUTCOME: The table to the right gives the PM2.5 and PM10 results for a set of Method 5 samples from a source too clean for gravimetric based particle size distribution measurements to be applied. The source operator was able to satisfy testing requirements for these very lightly loaded samples.
Visit our Stack Sample Analysis page for analyses available.