Dr. Willi A. Brand

• Commission on Isotopic Abundances and Atomic Weights (Chair)
• Subcommittee on Stable Isotope Reference Material Assessment (Chair)
• Subcommittee on Isotopic Abundance Measurements (Member)

• member: Project No. 2011-027-1-200: Evaluated Published Isotope Ratio Data (2011-2013)
• member: Project No. 2009-046-2-200: Terminology and definition of quantities related to the isotope distribution in elements with more than two stable isotopes
• chairman: Project No. 2009-027-1-200: Assessment of Stable Isotopic Reference and Inter-Comparison Materials
• member: Project No. 2009-029-1-200: Evaluated Published Isotope Ratio Data (2010-2011)
• member: Project No. 2007-031-1-200: Evaluated compilation of international reference materials for isotope abundance measurements
• member: Project No. 2007-028-1-200: Evaluated published isotope ratio data (2007-2009)
• chairman: Project No. 2005-022-1-200: Calibration of organic and inorganic oxygen-bearing isotopic reference materials
• member: Project No. 2001-019-2-200: Guidelines for mass spectrometric isotope ratio measurements