TY - CONF A1 - van de Kreeke, Johannes T1 - Databases for proficiency testing schemes and certified reference materials - EPTIS and COMAR N2 - Databases for proficiency testing schemes and certified reference materials - EPTIS and COMAR are introduced against the background of market developments. T2 - IUPAC/CITAC Workshop on Quality of Test Results for Conformity Assessment of a Chemical Composition, Isranalytica 2019 CY - Tel Aviv, Israel DA - 21.01.2019 KW - COMAR KW - Reference materials (RM) KW - EPTIS KW - Proficiency testing (PT) PY - 2019 AN - OPUS4-47314 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -