The University of Chicago
The University of Chicago
The Department of The Geophysical Sciences

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The University of Chicago Stable Isotope Ratio facility

Prices may change without notice (or website updates). Prices listed below are estimates based on academic pricing of $75/hr instrument time and additional $75/hr staff time using estimated time for a given run plus consumable costs.  Higher rates for commercial projects.  Always contact the lab before sending any samples.  This is mainly set up to be a facility for use by the University of Chicago community, but is available for limited service runs. Acknowledgements:  The purchases of the major pieces of equipment, mass spectrometers and peripherals, were supported by NSF award #0923831.  "This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."  And many thanks to the U of C for the needed renovations and added support for the laboratory.

Device Isotopes samples
typical ratio:
sample/total runs
U of Chicago
(lower rates for self service runs)

Costech EA
burn samples
15N & 13C
solids, organic (burn) or inorganic (decompose when tin burns) 0.71 $9.00

carbon reduction
solids, Ag3PO4, BaSO4, AgNO3 0.51 $15.50
(for single run,  quadruplicates recommended)

triplicate runs
(all samples)
15N, 18O solid, nitrates
(not recommeded)


D/H solids, organic

D/H solid, hydrous minerals

D/H, 18O water, injections, when running

Gasbench, headspace analysis 18O water, CO2 equilibratrion 0.73 $12.00

D/H water, H2 equilibration w/ Pt catalyst

13C, 18O carbonates, after acid addition

13C DIC, acid treated

13C DOC, when set up (wet digestion in vial)

traced gases on request

Isotopologue D47 CO2, cleaned up and ready to run 0.63 on request

N.B. Prices are approximate, and are meant to serve as guides only.  Actual cost may vary.  Costs will be higher if we have to weigh out the samples.  Costs will drop if users supply their own capsules and weigh out their own standards along with their samples.  If samples are at the extremes of our working range, more standards will be required and the cost per sample will be higher.  And prices are subject to change without notice.