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:

TPS100 Nanoparticle Sampler

The TPS100 nanoparticle sampler is the first fully self-contained, handheld thermophoretic sampling device on the market.


The TPS100 nanoparticle sampler is the first fully self-contained, handheld thermophoretic sampling device on the market. This device collects airborne particles directly onto an electron microscope (EM) grid, which can be analyzed directly (no preparation required) using a high resolution EM to obtain detailed characterization of airborne nanoparticles.

Based on the principle of thermophoresis, or thermal precipitation, the TPS100 has an internal temperature gradient that drives particles to the EM grid, regardless of the sampler’s orientation. Projects to date using the sampler include:

  • Placement in the International Space Station for air quality analysis
  • Evaluation of cerium particles in diesel fuel emissions
  • Investigation of siloxane in the atmosphere
  • Characterization of secondary organic aerosols
  • Evaluation of emissions from 3D printing
  • Characterization of aerosols released from composite nanomaterials
  • Assessment of the release of nanocellulose from a production process
  • Characterization of combustion
  • Study of the release of ultrafine metal particles from commercial products with small electric motors.


TPS100 $4999 (government)
TPS100 $6500 (commercial)

For more information on the TPS100, please click below.

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