Search Results for: “SEM

Custom Chemical Manufacturing Demands Effective cGMP Services

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Custom chemical manufacturing companies who provide products used in the pharmaceutical, food, and cosmetics industries are all governed by the same cGMP, or current Good Manufacturing Practices, as the industry customers they serve. The Food and Drug Administration (FDA) established and regulates these guidelines, setting the standards for how a company manufactures its products and […]

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Swabs or Stubs? It’s Not Even A Question

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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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Characterizing Powder Metal for 3D Printing: Particulate Contamination

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This article is Part 2 of a series on Powdered Metal Manufacturing Characteristics for 3D Printing written by Stephen Kennedy, Ph.D. of RJ Lee Group. Additive manufacturing, also known as 3D printing, is quickly becoming an industry standard for product manufacturing in a variety of applications, including medical devices, aviation and aeronautics parts, and transportation. […]

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Characteristics of Powder Metal for 3D Printing

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In Powder Metal (PM) applications such as 3D printing, the flow and packing behavior of PM is influenced by particle size and shape distributions. These properties can be measured in a statistically meaningful way using computer controlled scanning electron microscopy (CCSEM). In livetime, the SEM program detects a particle, defines its perimeter, calculates its size and […]

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EBSD for Crystal Particle Analysis

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The analysis of a material’s crystallographic properties can provide a researcher with a wealth of information, including the identification, processing history, and much more. Although many techniques can be used to obtain various pieces of information, electron backscatter diffraction (EBSD) can give a more complete picture of not only what the substance is, but what […]

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Presence of Mercury Indicates Potentially Counterfeit Version of Medication

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A client recently approached RJ Lee Group with a suspected counterfeit version of their patented injectable medication. Unlike the cloudy solution the company produces, the two samples provided were more translucent, almost clear. The client was concerned that the samples were either a counterfeit or contaminated version of their product, and asked our laboratory to […]

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Stephanie Horner Appointed MAAFS Criminalistics Chair

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RJ Lee Group Forensic Scientist Stephanie Horner has been appointed Criminalistics Chair for the Mid-Atlantic Association of Forensic Scientists (MAAFS) for 2016-2017. She has served as Criminalistics Chair-elect since May 2015. MAAFS features three divisions, catering to different disciplines within the forensic science field: Biology, Criminalistics, and Questioned Documents. As Criminalistics Chair, Stephanie is responsible […]

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