Isotopic Reference Materials

Selected list of isotopic-reference material vendors is listed below. More information regarding available reference materials is available from the International database for certified reference materials COMAR

BAM
Isotopic reference materials for boron and cadmium may be purchased from the Federal Institute for Materials Research and Testing (Germany).
BAM European Reference Materials Programme

IAEA
Reference materials and inter-comparison samples for isotopes of hydrogen, oxygen, carbon, nitrogen, lithium, boron, sulfur, and chlorine may be purchased from the International Atomic Energy Agency (Austria).
IAEA Reference Products for Environment and Trade

IRMM
Isotopic reference materials may be purchased from IRMM.
European Reference Materials

NBL
Reference materials for isotopes of uranium, thorium, and plutonium may be purchased from the New Brunswick Laboratory, the US Government's Nuclear Materials Measurements and reference materials Laboratory.
NBL Certified Reference Materials

NIST
Isotopic reference materials of many elements may be purchased from the National Institute of Standards and Technology (USA).
NIST Standard Reference Materials Program

NRC
Reference materials for isotopes of mercury may be purchased from the National Research Council Canada.
Canadian Reference Materials

USGS
Reference materials for isotopes of hydrogen, oxygen, carbon, nitrogen, lithium, and sulfur may be purchased from the US Geological Survey.
Reston Stable Isotope Laboratory

Isotope reference materials are produced by National Metrology Institutes of many countries.