The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), intends to negotiate a sole source contract for the annual membership fee with the Asia Pacific Accreditation Cooperation (APAC). This membership is crucial as it facilitates technical cooperation with National Metrology Institutes and Designated Institutes, allowing NIST to participate in General Assembly meetings, access research content, and manage proficiency testing programs. A firm fixed-price Purchase Order is expected to be issued around January 1, 2026, for a one-year period, with responses to this notice due by 5:00 PM EST on December 15, 2025. Interested parties may contact Harry L. Brubaker at Harry.Brubaker@nist.gov for inquiries.