The National Institutes of Health intends to award a sole-source contract for maintenance and repair services for nine proprietary Leica laboratory instruments. The services include all labor, parts, and software support, requiring 24-hour emergency response from factory-trained engineers. The work will be performed at the IDPS laboratory located at the Twinbrook III Facility in Rockville, MD. The period of performance is a base year from May 18, 2026, to May 17, 2027, with three option years extending through May 17, 2030. The justification is that Leica Microsystems is determined to be the only responsible source capable of providing the required proprietary support.