NOAA intends to award a sole source purchase order to Auburn University for specialized photopigment analysis services, with performance located in Huntsville, AL. The period of performance is from September 28, 2026, through September 27, 2027. Auburn University is the only vendor capable of providing these services due to its unique equipment and expertise in freshwater pigment analysis, particularly for cyanobacteria in lake systems. This is not a request for competitive proposals, and no solicitation package is available. Interested firms that believe they can meet the requirement may submit substantiating documentation in writing within 15 days after publication of this notice.