The Department of Health and Human Services, specifically the National Institutes of Health (NIH), intends to award a sole source service contract to SPT Labtech Limited for the maintenance of liquid handling systems used in immunobiology research. The contract will support the B Cell Analytic group of the Vaccine Immunology Program, which relies on SPT Labtech's Firefly and Dragonfly systems to analyze immune responses in clinical evaluations related to HIV vaccines. This procurement is critical for ensuring data integrity and continuity in research, as SPT Labtech is the only vendor capable of providing the necessary services for these specialized instruments. Interested vendors may submit their capabilities statements to Seth Schaffer at seth.schaffer@nih.gov within 15 days of this notice, with the contract expected to be awarded within 20 days. The period of performance spans from May 27, 2025, to May 26, 2028, with the place of performance located in Gaithersburg, Maryland.