The National Institute of Standards and Technology (NIST) is seeking information from qualified sources for the vailing of monoclonal antibody reference materials as part of its Biomanufacturing Initiative. The procurement aims to identify capabilities for diluting bulk biopharmaceutical formulations under aseptic conditions, aliquoting them into specified units, and ensuring compatibility with cryogenic storage, while maintaining purity standards. This initiative is crucial for providing reliable reference materials that support the biopharmaceutical industry in developing and characterizing monoclonal antibody drugs. Interested parties should submit their capabilities and relevant experience to Don Graham at deg@nist.gov by the specified response date, with the expectation of a Request for Quotation being issued within 120 days.