Researchers at NIST regularly perform interlaboratory studies [https://www.nist.gov/mml/csd/products-and-services/quality-assurance-programs], where participating laboratories are given test materials to perform specific measurements and then participants return their results to NIST. These results are summarized in comparison reports (often anonymized) to allow participating laboratories to understand how their internal methods perform in comparison with the rest of their measurement community. Participation is voluntarily and is no or minimal cost (e.g., material shipping) to participate.