TY - CONF A1 - Vogl, Jochen T1 - Isotope ratio working group at CCQM N2 - The presentation gives the reasons for initiation of an isotope ratio working group at CCQM level, describes the process and provides the auduince with the initial working plan. T2 - EURAMET TC-MC Workshop on Isotope Ratio Analysis CY - Bern, Switzerland DA - 05.02.2020 KW - Metrology KW - Absolute isotope ratio KW - Isotope ratio KW - Delta value PY - 2020 AN - OPUS4-50344 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -