Notice of Intent to Sole Source for the renewal of annual service/maintenance agreement for the Physical Electronics PHI SAM 590 and PHI 548 UHV Systems. The Department of Energy (DOE), National Energy Technology Laboratory (NETL), intends to award a purchase order on a sole source basis to RBD Instruments, Inc. to renew the annual service/maintenance agreement for the PHI systems. The maintenance includes one on-site visit, unlimited technical support, and factory repairs. RBD Instruments is the only known source that can maintain the PHI systems due to proprietary hardware and software. Interested parties must provide evidence of their capability to fulfill the requirement by 13:00 PM ED on 07/31/2024.