Gunshot Residue Analysis Gunshot residue (GSR) has long been collected during criminal investigations. Currently, the standard method for collecting primer GSR is using adhesive stubs which can then be analyzed via scanning electron microscopy (SEM). Prior to SEM analysis, the most common method of analyzing primer GSR was atomic absorption which utilizes cotton swabs for […]
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This is the second in a series of blog posts on X-ray photoelectron spectroscopy (XPS) by Dr. Jerry LaSalle, an expert in XPS surface analysis and physical and powder metallurgy. Dr. LaSalle’s areas of concentration include stainless steel passivation qualification, metallurgical failure analysis, additive manufacturing, and powder metallurgy consultation. XPS determines nitrogen chemistry and depth of […]
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RJ Lee Group welcomes two new senior staff members whose expertise will expand the company’s analytical and research capabilities in the identification and characterization of mineral and asbestos particles and in the fields of physical and powder metallurgy.
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The life sciences industry faces persistent challenges in assuring glass compatibility with products. One of the most serious challenges is that of glass delamination. Glass delamination, which occurs in vials, is a complex result of various factors including product composition, glass composition, glass forming temperature, and surface treatment. When delamination results in lamellae (flakes) or […]
Read MoreAs reported on knoxnews.com (YourNews: Roane State receives new microscope), the electronic version of the Knoxville News Sentinel, RJ Lee Group, Inc. donated a scanning electron microscope (SEM) valued at approximately $75,000 to the Oak Ridge campus of Roane State Community College in Oak Ridge, TN.
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