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 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:


What is Thermal Analysis?

Thermal analysis uses various techniques to investigate differences in a material’s properties when subjected to changes in temperature. Both endothermic reactions (energy absorbing) and exothermic reactions (release of energy) are monitored, as well as weight loss when heating and cooling.

What Are Some Thermal Analysis Techniques?

Thermogravimetric Analysis (TGA)
  • Measures the mass of a sample while the sample is heated or cooled in a defined atmosphere
  • Indicates composition and relative concentration by weight for each element including volatiles, organics and inorganics
  • Provides information on thermal stability
  • Helps determine levels of a material’s organic and non-organic components’ degradation temperature of polymers, moisture content absorbed by a material, and solvent residues on coatings and films.
Differential Scanning Calorimetry (DSC)
  • Measures the heat flow to the sample and to a standard when they are at the same temperature
  • Measures and compares the differences in heat flow to determine the sample’s thermal properties
  • Aids in understanding of the material’s changes in composition, crystallinity, melting point and amount of curing
  • Used for both organic and inorganic materials
  • Utilized to observe fusion and crystallization changes, determine glass transition temperatures, oxidative stability; examining polymers for composition, studying curing processes, drug analysis and monitoring a variety of chemical reactions
Simultaneous DSC TGA (SDT)
  • Measures the mass of a sample (TGA) and the heat flow (DSC) as the sample is heated or cooled in a controlled atmosphere
  • Simultaneous measurement of both weight change and true differential heat flow on the same sample differentiates between reactions in which there is no weight loss and those events which do produce a weight loss
  • Combined evaluation ensures identical conditions for both measurements and removes any uncertainties related to individual analytical conditions
  • Analyzes a wide variety of materials, including polymers, ceramics, metals, and other inorganics
  • Determines composition of multi-components, melting points, boiling points, decomposition/degradation, oxidative stability, thermal stability, heat of fusion, moisture content, and volatiles content