The National Accreditation Body of Austria confirms the accreditation (ID nr. 0428; business nr. 2020‑0.276.673) of the University of Natural Resources and Life Sciences, Gregor-Mendel-Str. 33, A‑1180 Vienna as Proficiency Testing Provider according to EN ISO/IEC 17043:2010 with the initial date of May 4, 2020. Site/unit: Department of Agrobiotechnology Tulln, Institute of Bioanalytics and Agro-Metabolomics, IFA‑Proficiency Testing Scheme, Konrad-Lorenz-Straße 20, A‑3430 Tulln. This guarantees international comparability and the recognition of our competence.