Argonne National Laboratory seeks a Dilution Refrigerator for Q-NEXT, a U.S. Department of Energy National Quantum Information Science Research Center, with evaluation based on lowest price, technically acceptable criteria. Required technical capabilities are detailed in the Statement of Work, and offerors must provide a completed and signed ANL-70 Request for Quotation, a capabilities list aligned with the technical requirements, country of origin, lead time from PO to final delivery, and completed and signed ANL-70B Reps and Certs. Delivery is FOB Destination to Lemont, IL 60439 or DAP (Incoterms 2020). Country of origin must comply with FAR 52.225-1 Buy American—Supplies, including domestic component cost thresholds. Questions should be directed to the Contracting Officer.