HIGH PURITYMATERIALS


Light Stable Isotopic Materials


These RMs are for calibration of isotope-ratio mass spectrometers and associated sample preparation systems. They are distributed by NIST on behalf of the International Atomic Energy Agency (IAEA). At the request of the IAEA, quantities of these materials are limited to one unit of each RM per laboratory every 3 years.


Isotopic Ratio Legend: 1. δ2HVSMOW2 2. δ18OVSMOW2 3. δ13CVPDB 4. 6Li / 7Li 5. δ30SiNBS28 6. δ15NAIR 7. δ34SVCDT


RM Description 8535 VSMOW2-Water


8536 GISP-Water 8537 SLAP2-Water 8538 NBS30-Biotite 8539 NBS22-Oil


8540 PEFI-Polyethylene 8541 USGS24-Graphite 8542 Sucrose ANU-Sucrose 8543 NBS18-Carbonatite 8544 NBS19-Limestone


8545 LSVEC-Lithium Carbonate 8546 NBS28-Silica Sand (Optical) 8547 IAEA-N1-Ammonium Sulfate 8548 IAEA-N2-Ammonium Sulfate 8549 IAEA-N3-Potassium Nitrate 8550 USGS25-Ammonium Sulfate 8551 USGS26-Ammonium Sulfate 8552 NSVEC-Gaseous Nitrogen


8553 Soufre de Lacq - Elemental Sulfur 8554 IAEA-S1-Silver Sulfide 8555 IAEA-S2-Silver Sulfide 8556 NBS123-Sphalerite 8557 NBS127-Barium Sulfate 8558 USGS32-Potassium Nitrate 8559 Natural Gas Isotopic 8561 Natural Gas Isotopic 8562 CO2 8563 CO2 8564 CO2


-Heavy, Paleomarine Origin -Light, Petrochemical Origin


-Biogenic, Modern Biomass Origin


8568 USGS34 Potassium nitrate 8569 USGS35 Sodium nitrate 8573 USGS40 L-glutamic acid 8574 USGS41 L-glutamic acid


Isotopic Systems Unit Size 1,2


1,2 1,2 1,2 1,3 1,3 3 3


2,3 2,3 2,3 2,5 6 6 6 6 6 6 7 7 7 7


2,7 2,6 1,3 1,3 2,3 2,3 2,3 2,6 2,6 3,6 3,6


20 mL 20 mL 20 mL 2 g


1 mL


~2 mg 0.8 g 1 g


0.4 g 0.4 g 0.4 g 0.4 g 0.4 g 0.4 g 0.4 g 0.4 g 0.4 g


300 µmol 0.5 g 0.5 g 0.5 g 0.5 g 0.5 g 0.5 g


1 cylinder (0.1 mole) 1 cylinder (0.1 mole) 2 tubes 2 tubes 2 tubes 0.9 g 0.9 g 1 g


0.5 g


WWW.NIST.GOV/SRM  PHONE: (301) 975-2200  FAX: (301) 948-3730  EMAIL: SRMINFO@NIST.GOV


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