This is a sole-source solicitation intended for BD Biosciences to provide a service agreement for specific, custom-modified flow cytometry instruments at their location in Milpitas, CA. The contract is a firm fixed-price procurement with a base performance period from March 1, 2026, to February 28, 2027, plus two option years. The service agreement covers comprehensive maintenance, including preventive inspections, unlimited service visits, and telephone support for the listed BD equipment. The justification for the sole-source award is that BD Biosciences is the original manufacturer, made custom modifications, and is the only entity authorized to service this proprietary equipment. Any alternate offeror must include a signed agreement from BD Biosciences confirming they are authorized to provide all required services and parts.