Cyclopure is a materials science and environmental engineering firm headquartered in Chicago, IL. The company has developed a novel adsorbent (tradename DEXSORB®) with high selectivity for PFAS removal in diverse water matrices. DEXSORB is being commercialized for multiple PFAS-related uses, including (i) environmental testing, (ii) residential filtration, and (iii) large-scale treatment systems. The company is operating full-scale engineered systems for treatment of municipal drinking water and industrial wastewater, plus groundwater remediation with the Department of Defense.