We provide testing services to certify product and materials compliance, support quality control, and ensure the health and safety of workers and their environment. We provide assistance for clients who are not sure what tests they need. Our accredited materials characterization laboratory is the foundation of all the services of RJ Lee Group provides, including standardized testing for compliance, industrial hygiene and environmental analyses, quality control, and materials research and development.

We provide credentialed expertise supported built by robust scientific data. We provide significant support to industrial clients for product development, industrial hygiene and overall production support.

RJ Lee Group maintains a visible and respected reputation within the legal community, having offered scientific support in civil litigation matters for nearly 30 years. 

  • Product Liability 
  • Toxic Tort
  • Construction Defect
  • Fugitive Emission
  • Personal Injury
  • Patent Infringement
  • Contract Disputes
  • Insurance Subrogation

Subject Matter Experts

From our core business of providing scientific solutions to our clients, we have developed innovative products. Some are produced internally, and some have arisen from partnerships with other research organizations. 

For example, we build lab software solutions to help manage and streamline your labs data, and environmental testing products for a variety of applications. 

  • IntelliSEM is a powerful automated particle analysis system.
  • ParticleID is  a customizable cloud hosted web application used to identify foreign particulate matter and  assist with root cause investigations. 

Other products we create count particles and help keep the air and environment safe.

RJ Lee Group is a materials analysis laboratory and consulting company which serves many different industries. We offer scientific solutions such as industrial forensics services, laboratory and testing services, litigation support, and laboratory software to many industries:

Enhanced Respirable Crystalline Silica Analysis Surpasses Previous Reporting Limits

RJ Lee Group News

April 18, 2017

Although respirable silica has been regulated for decades, the Occupational Health and Safety Administration (OSHA) put new guidelines into place in 2016, updating the existing 1971 rules.

Across most industries, the new PEL level is 50 µg/m3 over an eight-hour shift, with an action level of 25 µg/m3.

Our AIHA accredited laboratory provides sampling media (including pre-weighed filters) for respirable crystalline silica, then utilizes NIOSH 7500 with X-ray Diffraction (XRD) to provide accurate, definitive measurements. XRD provides insight into other materials in the sample that may prevent accurate analysis, known as interference. This includes identification of mica, feldspar, graphite, and more. Our experts also use the ICDD database to provide information on the thousands of known diffraction patterns that identify the interfering materials.

RJ Lee Group’s laboratory uses the clean plasma ashing method, eliminating the filter without leaving ash or other residues in the sample for testing. Plasma ashing has been verified to provide superior overall silica recovery when compared to the muffle furnace ashing method.

We offer two types of Respirable Crystalline Silica analysis:

Standard Analysis:

Analysis down to 5 micrograms per filter

NEW Enhanced Analysis:

Analysis down to 2.5 micrograms per filter, the lowest available reporting limit
Our scientific experts can also help your organization interpret the analytical results. In addition, we offer determination of crystalline silica for bulk samples, along with full profile identification and quantitation using Rietveld XRD analysis for bulk samples. RJ Lee Group is offering Respirable Silica air sample results with a turnaround time of 5 working days. To learn more, please call us at 1.800.860.1776, extension 4, then 2, or click below.

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