The Department of Health and Human Services, specifically the Food and Drug Administration (FDA), is seeking qualified contractors to provide preventive maintenance and repair services for a Sciex Triple Quad 5500+ QTRAP HPLC/MS/MS system and an Agilent 1260 HPLC system. The procurement includes a base year and three optional years of service, requiring one planned maintenance visit annually, prompt on-site corrective maintenance, adherence to OEM specifications, and the provision of software updates and factory-certified replacement parts. These services are critical for maintaining the operational efficiency of analytical equipment used in research at the National Center for Toxicological Research, ensuring that ongoing studies are not delayed. Interested parties should contact Warren Dutter at warren.dutter@fda.hhs.gov or call 870-543-7577 for further details, and the contract will be awarded based on technical capability and experience, with a firm-fixed price structure.