The U.S. Geological Survey is conducting market research for potential maintenance support services for a 1290 LC-MS/MS and a 1260 HPLC instrument to ensure their functionality and data integrity. Required capabilities include experience servicing these instruments, an authorized reseller agreement, use of factory parts and software, and on-site troubleshooting with a standard 2-3 day response time. This is a sources sought notice only, and there is no formal solicitation or associated budget at this time. The government will use responses to determine whether to set aside the potential future requirement for small businesses or use full and open competition. Interested and qualified parties must submit a capability statement by the specified deadline.