This firm-fixed-price purchase order was awarded by the National Institutes of Health's National Institute of Allergy and Infectious Diseases to Sartorius Corporation, a foreign-owned manufacturer, to provide streptavidin and antibody biosensors to support COVID-19 research. The $163,390 contract was issued on a sole-source basis under simplified acquisition procedures, as the biosensors were specific to an Octet instrument previously procured from Sartorius. No set-aside was used. Sartorius, a provider of biopharmaceutical and laboratory solutions, has a history of federal contracts with the Department of Health and Human Services and its component agencies to furnish research equipment, consumables, and services.