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A History of Expertise and Innovation

RJ Lee Group has assessed environmental issues since the early 1980s when our Energy Technology Consultants (ETC) pioneered the recognition of specific air quality patterns. We developed a cutting-edge technique for identifying, measuring, and characterizing particles in the air using computer-controlled scanning electron microscopy (CCSEM).

RJ Lee Group has worked with clients in various industries, including the U.S. Environmental Protection Agency (EPA), to assess and provide solutions for environmental factors that could affect our health. Our services have grown over the years, from setting controls for unbound nanoparticles (UNP) to designing and building test chambers to simulate specific environmental conditions.

Today we offer our expertise for our clients’ environmental and compliance concerns and perform rigorous assessment and management of potential environmental risks.


Dispute Advisory Services

RJ Lee Group has a proven track record of providing over 40 years of scientific expertise on numerous issues involving product liability, toxic tort, construction defect, nuisance dust, personal injury, criminal forensics, and patent infringement cases. We help our clients protect themselves from future potential litigation by collecting and storing a track record of product quality testing.

With on-site comprehensive laboratory facilities and a multidisciplinary team of experts, we can provide the expertise and highly defensible data productions to navigate tough scientific topics in legal forums across the globe.

At RJ Lee Group, science speaks for itself. We give it a confident voice

When the science is sound,
your case is strong.

failure analysis
Failure Analysis

Root cause failure analysis requires in-depth working knowledge across multiple industrial sectors and material applications. We are experts in using this industrial forensics approach to provide the scientific foundation to determine the root cause of failure.

Nano Characterization
When evaluating risk, we address concerns related to product stewardship and the impact of nano-materials both to the environment and to human health. Our cutting edge instrumentation and nano-characterization capabilities, as well as our proven experience in conducting field assessments provide a sound scientific foundation in nano-product evaluation matters.
materials characterization
Materials Characterization
When dealing with matters involving the performance and reliability of raw materials or those used in product design or assembly, our experts conduct studies that identify material properties, validate and develop investigative procedures, test and affirm quality assurance, and explain anomalies.
Corrosion Analysis

When product liability or property loss may be a result of the impact of corrosion, we are experts in assessing the nature and cause of the failures or materials impact. This includes using controlled and simulated environments to determine if the damage is a result of a defective product, material, process, or operating environment.

Particle Characterization

Highly sophisticated chemistry and microscopy techniques are necessary for environmental exposure and source apportionment, nuisance, dust, indoor air quality, pharmaceutical, medical device failure, surface cleanliness, and mineral dust identification. We have written, tested, and validated many multidisciplinary techniques used to characterize individual and populations of particles properly.

Post-Disaster Assessment
Post-Disaster Assessment

Catastrophic events such as a structure collapse, train derailment or pipeline rupture may involve property damage and potential contamination and exposure concerns. Our experts lead large-scale, rapid response field assessments supported by our full-service laboratory to provide the data needed to respond to regulatory agencies, assess material damage, determine risk-based cleanup standards, and develop comprehensive remediation strategies.

Patent Infringement Analysis
Patent Infringement Analysis

Litigation involving patent infringement can be complicated, but our experts have extensive experience with the analysis of device design, electrical and material properties, and more to conclusively ascertain whether your clients’ patent has been infringed upon.

Expertly crafted solutions for each unique scientific problem

RJ Lee Group's wealth of experience in developing action plans, organizing and identifying samples, and conducting comprehensive studies ensures the availability of robust scientific data to substantiate expert opinions and testimony. Our reputation for delivering accurate laboratory results and providing respected expert testimony is a key reason why our clients consistently recommend us to their peers.


Our team of experts at RJ Lee Group boasts decades of specialized knowledge across various scientific disciplines. Coupled with our substantial analytical resources, this profound expertise empowers us to develop analytical protocols that address specific key issues and deliver reliable results. While the methodology or investigative approach may be tailored to the unique circumstances of each study, the analytical methods employed are firmly rooted in established, scientifically accepted practices.


Criminal Forensic Consulting

To effectively navigate the intricacies of forensic analysis in court, police departments, defense teams, and prosecutors heavily rely on the expertise of unbiased experts. These experts possess the perfect blend of qualifications and experience needed to confidently and effectively communicate the meaning of the findings.


At RJ Lee Group, we understand the importance of having reliable scientific experts who can assist in presenting complex test results in a clear and concise manner. In addition to providing testimony for the forensic analyses we conduct, our team of highly skilled consultants also offer the invaluable service of reviewing and critiquing test results from other labs, ensuring that all findings are thoroughly examined and accurately interpreted.

court testimony
Working with RJ Lee Group

RJ Lee Group’s strength lies in our scientific insight and decades of specialization in areas related to product liability, toxic tort, construction defect, nuisance dust, personal injury, and patent infringement.

Litigation Experience

Targeted inquiry addressing the fundamental scientific issues.

Accredited Testing Laboratory

Defensible analytical data provided by seasoned professionals in our accredited laboratories.

Expand Your Team

Internal experts & external network provides targeted subject matter expertise.

Defensible Data

Laboratory simulations & test chamber studies provide real-world answers based on sound science.

Expert Witness Testimony

Trusted industry experts give science a confident voice.

Field Inspection & Sampling

Laboratory capability extends to field and on-site sampling and monitoring.

Case study

Case study

How AeroTech Secured Its Future

When AeroTech Industries faced recurring defects in a crucial aircraft component, they were at risk of losing multi-million dollar contracts and jeopardizing the jobs of hundreds of employees. They enlisted the help of RJ Lee Group, who quickly deployed a team of technical experts. Through state-of-the-art forensic analysis, RJ Lee Group identified and rectified the root cause—a flaw in the casting process—eliminating the defect and preserving AeroTech's contracts.


expert spotlight

Matthew Perricone, Ph.D.

Principal Investigator & Technical Consulting Group Manager

Dr. Perricone directs and performs root cause failure analyses for multiple industrial sectors in support of product development, performance optimization, and manufacturing quality assurance. His projects also include addressing warranty, insurance and product liability claims. Dr. Perricone has been accepted as an expert in Corrosion and Materials Science in U.S. District Court in multiple districts and has testified in a variety of cases.

Discuss Your Litigation Needs with RJ Lee Group

Our experts understand that each case is dynamic with changing needs over the course of our engagement. We have a proven track record in meeting rigorous court deadlines, and our clients value our ability to adapt quickly to changing circumstances. Contact us to connect with an expert relevant to your needs.