The U.S. Environmental Protection Agency (EPA) is conducting market research through a sources sought notice for filter acceptance testing services. The objective is to identify qualified parties capable of confirming that various filter types, including Teflon, quartz, and glass fiber, meet the EPA's specifications for physical and chemical properties. This testing is crucial for ensuring compliance with environmental standards and the effectiveness of filtration systems. Interested parties are encouraged to reach out to Lori Garza at garza.lori@epa.gov or (202) 250-8755 for further information, noting that there is no solicitation at this time and participation is voluntary.