Pace(R) launches new testing method for ultrashort-chain PFAS. New method helps researchers, regulators, and innovators better understand the full PFAS picture Minneapolis, MN - March 12, 2026 - Pace(R) Analytical Services, the preferred provider of regulatory testing and analytical laboratory services, and a Division of Pace(R), a Science and Technology Company, announced today the launch of a new proprietary testing method designed to detect ultrashort-chain per- and polyfluoroalkyl substances (PFAS). Ultrashort-chain PFAS, defined as compounds with three or fewer carbon atoms, are recognized by researchers as both highly persistent and exceptionally mobile in groundwater. Despite their prevalence, these compounds are not included in published PFAS method lists such as 537.1, 533, or 1633. "Most PFAS testing today captures only a small fraction of the more than 15,000 PFAS compounds that exist," stated Nick Nigro, PFAS Product Manager, Pace(R). "Ultrashort-chain PFAS are often present at much higher concentrations than their longer chain counterparts, yet they've remained outside the scope of standard methods until very recently. This new method helps close a gap in our understanding of PFAS occurrence and behavior in the environment." Pace(R) developed this method based on a forthcoming U.S. Environmental Protection Agency (EPA) drinking water method, currently in development and expected to be published as EPA Method 563. The Pace(R) method uses comparable instrumentation and quantification techniques for established PFAS methods, ensuring consistency and reliability in aqueous samples. Pace(R) is a portfolio company of Leonard Green & Partners and Los Angeles-based Aurora Capital Partners. About Pace(R) Analytical Services Pace(R) makes the world a safer, healthier place. Pace(R) people are committed to advancing the science of businesses, industries, consulting firms, government agencies, and others by providing local-level service backed by a national laboratory network. Through its in-lab and emergency onsite containment and regulatory services, Pace Analytical Services, LLC ensure its air, water, soil, and more are safe for its communities and lives. Pace(R) also supports customers with in-house labs, providing a range of professional services to keep their operations moving forward. * Date: March 12, 2026

Pace Analytical Services has launched a new proprietary testing method to detect ultrashort-chain per- and polyfluoroalkyl substances (PFAS), compounds with three or fewer carbon atoms. These highly persistent substances are exceptionally mobile in groundwater but are not included in current standard PFAS testing methods. The new method addresses a significant gap in PFAS testing, which currently captures only a small fraction of the more than 15,000 known PFAS compounds. Ultrashort-chain PFAS often appear at higher concentrations than longer-chain variants, according to Nick Nigro, PFAS Product Manager at Pace. The method is based on a forthcoming US Environmental Protection Agency drinking water method, expected to be published as EPA Method 563, and uses comparable instrumentation to established PFAS testing methods.