NASA's National Aeronautics and Space Administration (NASA) is seeking to procure a PML Solar-Tracking Radiometry Platform from Plymouth Marine Laboratory, which is identified as the sole source for this requirement. The platform will autonomously collect full-spectrum light intensity measurements using commercial TriOS RAMSES radiometers, enhancing ocean color measurement validation through continuous monitoring of light intensity in marine environments. The project is expected to be performed over a period of approximately 4-5 months at the Ocean Ecology Laboratory in Greenbelt, Maryland, with interested organizations invited to submit their capabilities and qualifications by 3:00 p.m. Central Standard Time on May 15, 2025. For further inquiries, interested parties may contact Cody Guidry at cody.d.guidry@nasa.gov or Will Garrett at will.c.garrett@nasa.gov.