The Department of Health and Human Services, through the National Institutes of Health (NIH), is seeking a qualified contractor to provide a service agreement for a FACSymphony S6 sorter and associated lasers, essential for maintaining optimal operation of flow cytometry equipment used in critical research. The contract includes provisions for preventive maintenance inspections, unlimited service visits, and priority onsite scheduling to minimize downtime, ensuring that the equipment remains functional for ongoing research into immune responses in HIV- and SIV-infected samples. Interested vendors must submit their quotes via the NIAID electronic Simplified Acquisition Submission System (eSASS) by November 25, 2024, with the contract period set from February 1, 2025, to January 31, 2026. For further inquiries, vendors can contact Mildred Moss at mildred.moss@nih.gov or Tonia Alexander at talexander@niaid.nih.gov.