This is a sole source pre-solicitation notice for the purchase of proprietary Abraxis® Microcystin (ADDA) ELISA test kits from Gold Standard Diagnostics Horsham, LLC. The kits must be delivered to Ann Arbor, MI, by July 1, 2026. The justification is that only this specific manufacturer's kits ensure data standardization and long-term integrity for NOAA's harmful algal bloom monitoring program. While no competitive proposals are being requested, firms believing they can meet the requirement may submit substantiating documentation to the point of contact within 15 days of the notice's publication. No budget information is provided in the description.