Primer Gunshot Residue (GSR) Analysis
We pride ourselves on our positive reputation in the industry, offering:
- A2LA-accredited in GSR Analysis
- Expertise in diverse surface GSR sampling
- Efficient GSR testing with exceptional turnaround times
- Pioneered the use of computer-controlled scanning electron microscopy
- Qualified as expert witnesses in 36 states, as well as Washington DC, Puerto Rico, and six additional countries
RJ Lee Group streamlines GSR collection and testing with our all-in-one GSR Test Kits, available free of charge when testing
Criminal Forensic Consultations
- Review and critique laboratory reports from other laboratories
- Develop the best strategy for our clients’ cases.
- Help prepare our clients for testimony questioning.
Expert Spotlight
Tarah Helsel
Manager & Forensic Scientist
Tarah oversees and participates in the preparation, analysis, interpretation and reporting of gunshot residue (GSR) evidence using Scanning Electron Microscopy / Energy Dispersive Spectroscopy (SEM/EDS) techniques. She is an expert witness and has given testimony in federal and state courts, for both the prosecution and the defense on more than 90 occasions. She has been qualified as an expert witness in courts in 20 U.S. states, Puerto Rico, and the countries of Bermuda and Turks and Caicos.
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.