Component Testing Laboratories makes the unknown known.
Donan CTL is now Component Testing Laboratories. Learn more about us here.

Empowering your subrogation decisions with objective analysis.
Component Testing Laboratories (CTL), a part of Alpine Intel’s suite of services, includes two of the highest-volume forensic engineering facilities in the U.S. designed specifically to address your property subrogation needs.
Our team of experts provides in-depth, reliable, and top-of-class reports with conclusions derived from thorough investigations based on the scientific method and engineering principles.
CTL simplifies your subrogation decision-making by offering a seamless experience across the full scope of the evidence management and investigation process. Our evidence preservation specialists reduce the inherent risk of spoliation by leveraging their extensive forensic engineering expertise, working quickly and efficiently, and delivering a single-line chain of custody.

Why Use Component Testing Laboratories?

CTL offers a seamless experience and single-line chain of custody across the full scope of the evidence management and investigation process.
Each of our Professional Engineers performs product failure testing for their specializations, ensuring that each assignment is investigated by the most experienced professional.
Our facilities are custom-built to employ the latest forensic equipment while testing a variety of appliances and components.
Through our Loss Logistics team, we’ve enhanced the process from pickup to return or disposal, including developing customized packaging and shipping standards that ensure evidence arrives at our East or West Coast facilities in an unaltered condition.
Due to our combined decades of experience, technical expertise, and in-depth research, Component Testing Laboratories provides actionable results that definitively identify manufacturing defects, installation errors, or abuse when these conditions are present.
CTL’s Professional Engineers deliver clear, unbiased, and professional testimony when necessary and are provided ongoing training for expert witnesses.
The Professional Engineers at CTL deliver product failure insights you can depend on.
- Professional Engineers
- Master Plumbers
- Metallurgists
- Certified Fire and Explosion Investigators (NAFI-CFEI)
- Crash Data Retrieval Technicians
- Certified Property and Evidence Specialists

