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Departments & Programs


Finnigan MAT 262 TIMS

The Thermal Ionization Mass Spectrometer is used for high-precision isotope ratio measurements.

Nu Plasma HR Multi-collector ICP-MS

The Nu Plasma HR is used for high-precision isotope ratio measurements across broad regions of the periodic table.

Nu AttoM High-resolution ICP-MS

The Nu AttoM is capable of fast high-precision concentration measurements over a large range of concentrations.

Picotrace metal-free clean laboratory for sample preparation and purification

The metal-free Picotrace laboratory was developed to provide optimal conditions for the separation and purification of isotopes in light of recent advances in both the sensitivity and analytical precision of mass spectrometers, and the development of new isotope systems that require special conditions.

Picotrace clean lab facility
Lab Safety Training November 15

The ICPMS/TIMS Facility within Stanford University's School of Earth Sciences is a state-of-the-art facility for the analysis of isotopes and trace elements using mass spectrometry.

The array of equipment in the laboratory includes a Nu AttoM high-resolution inductively coupled plasma mass spectrometer (ICP-MS), a Nu Plasma HR multi-collector ICP-MS, a Thermal Ionization Mass Spectrometer (TIMS) and a specially designed Picotrace metal-free low particulate clean laboratory. The Facility is open to collaboration with members of the Stanford Community.

To learn about procedures for conducting research in the laboratory, please see User Information.



Reduced evaporation played a role in allowing the Pleistocene lakes of the Western United States grow large.

Results of uranium and thorium isotopic analyses by graduate student Daniel Ibarra from the Stanford ICP-MS/TIMS facility are published in the Geological Society of America Bulletin.

Read more in the Stanford Report


Stanford scientists are studying a nearby abandoned mine for insights on transforming carbon dioxide gas into a solid mineral that can be permanently stored underground.

High concentrations of uranium in naturally occurring silica minerals provide evidence that hydrous silica minerals may be a useful tool for remediation of uranium contamination.

See the full story in the Stanford Report.