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The Stable Isotope Biogeochemistry Laboratory (SIBL) at Stanford University's School of Earth Sciences provides analytical facilities and technical expertise to members of the Stanford community who need to determine stable isotope ratios of a variety of organic and inorganic materials from both terrestrial and marine environments.

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The laboratory is housed in Mitchell Building (room A01 and A08) and Green Earth Sciences Building (rooms 332 and 334) located in the Science quadrangle at Stanford University. The facility has the ability to measure C, N, O (including 17O), and H in plant and animal tissue, soils, minerals, and waters. Moreover, by the use of infrared lasers and micro-drill techniques we will have the capability of high-spatial resolution isotopic measurements. Presently SIBL has seven mass spectrometers, five in Mitchell and two in Green. SIBL is overseen by Co-directors Professor C. Page Chamberlain of the Earth and Planetary Sciences and Professors Robert Dunbar and Karen Casciotti of the Oceans Department. Operation and management of the laboratory is the responsibility of science staff members Dave Mucciarone, Julie Weitzman and Jen Karolewski. For access to the laboratory please contact one of these laboratory managers.

Contact Us

*For research related to samples from marine/aquatic environments for isotopes, concentrations, total alkalinity, and/or total dissolved inorganic carbon contact:

David Mucciarone 
phone: (650) 723-0817

*For research related to samples from terrestrial environments contact:

Julie Weitzman
phone: (650) 721-1992

*For research related to samples N and O in nitrate and nitrite contact:

Jen Karolew 

RRID: SCR_023253