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:

PTR-MS for Environmental Analysis

RJ Lee Group provides the clear solution with innovative proton transfer reaction mass spectrometry, or PTR-MS, technology. When you need to monitor to comply with industry safety standards or government regulations, the PTR-MS provides real-time quantitative results down to the single digit pptv-level. Whether you are sampling indoor air quality (IAQ) proactively to identify and prevent issues that may become legal or safety concerns, or to monitor for trend logging over a period of time to ensure compliance, the PTR-MS provides you with the solution.

Indoor Air Quality (IAQ)

According to the Environmental Protection Agency (EPA), concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors. The PTR-MS can be used to determine passive smoking exposure, to help assess exposure of health care workers to anesthetic gases in hospitals, and in the monitoring of catalytic processes or processes in high technology manufacturing, such as the microelectronics industry, where airborne contamination interferes with clean room requirements.

Benefits of the PTR-MS include:

  • No sample preparation
  • Near Real-Time Analysis (Response time <100 ms)
  • Instant quantification
  • Changes in air can be captured daily
  • Very low limit of detection (LoD ~ 5 ppt) of VOCs
  • Allows monitoring of any indoor/outdoor air in any environment
  • Discriminates isomeric VOC compounds to separate and identify without using a carrier gas


PTR-MS Mobile Laboratory

RJ Lee Group has introduced another innovation with the PTR-MS Mobile Laboratory, a commercial van outfitted with the technology to provide remote analysis for outdoor locations. The van is also equipped with 100 feet of flexible hosing that for indoor testing at your location.  Because of its portability, the PTR-MS can measure VOC sources on site for chemical producers, power plants, petroleum refineries, etc., as well as record emissions from motor vehicles that change on a daily basis.

When used in a remote operation, the PTR-MS can monitor:

  • Long-range transport of VOCs, such as those from urban centers and provide metropolitan chemical concentration maps in real-time
  • Waste incineration and biomass monitoring, such as brushfires and forest fires
  • Agricultural applications, such as the impact of reactive trace gases above swamps, dairies, and feedlots, and the use of pesticides


Government Military Facilities

Historic chemical/fuel spills, fire training activities, landfills, drainage structures and underground storage tanks have created numerous potentially contaminated areas at military sites. Volatile compounds, such as carbon tetrachloride, TCE, and tetrachloroethylene, were used extensively for degreasing metal parts and equipment cleaning operations in the past, with disposal practices that led to their release into the environment. VOCs are the most significant organic contaminants in groundwater associated with disposal sites in the U.S. The PTR-MS mobile laboratory system is the most efficient means to locate VOC emissions throughout military complexes and identify the sources.

Recent PTR-MS Publications that RJ Lee Group Experts have Contributed to:

Electronic Cigarettes and Vaping-Associated Lung Injury (EVALI): A Rural Appalachian Experience

Real-Time Measurements of Gas Phase Trichloramine (NCI3) in an Indoor Aquatic Center

Ethanol-based Disinfectant Sprays Drive Rapid Changes in the Chemical Composition of Indoor Air in Residential Buildings

Real-Time Measurements of Botanical Disinfectant Emissions, Transformations, and Multiphase Inhalation Exposures in Buildings

A Method for the Identification of COVID-19 Biomarkers in Human Breath using Proton Transfer Reaction Time-of-Flight Mass Spectrometry

Influence of Mechanical Ventilation Systems and Human Occupancy on Time-Resolved Source Rates of Volatile Skin Oil Ozonolysis Products in a LEED-Certified Office Building