Stable Isotope Lab

Stable Isotope Biogeochemistry Laboratory (SIBLab)

Stable Isotope Biogeochemistry Laboratory (SIBLab)

The Stable Isotope Biogeochemistry Laboratory (SIBLab) facility in Prof. Grottoli’s lab in the School of Earth Sciences is currently under rennovation. New sample submissions will not be accepted until September 2018. For further information, contact Professor Grottoli (


Analytical equipment includes a Delta IV stable isotope ratio mass spectrometer (SIRMS) coupled to an automated carbonate Kiel III device, a Costech elemental analyzer (EA) coupled to the SIRMS via a Conflo III interface, and a gas multi-port (MP) inlet system coupled to the SIRMS.


SIB Lab analyses charges 

Inorganic carbonates (vial Kiel-SIRMS) for δ18O and δ13C analyses – $12.50/sample

Organic matter submitted as a dry powder (via EA-SIRMS) for δ15N and δ13C analyses – $12/sample

Organic matter loaded on filters (i.e., POM) (via EA-SIRMS) for δ15N and δ13C analyses – $26/sample

Gas ampoules (vial Multiport-SIRMS) for stable isotope analyses (which isotopes will depend on the sample) – $12.50/sample

Quoted prices are subject to change. Minimum charge of $300 for 1 – 15 powdered organic, carbonate, or gas samples.  Duplicates and standards are included. The per sample cost assumes that clients load their own samples and standards. Please allow for a 5% per year increase when projecting costs.  For OSU SES members, deduct $1/sample for organic samples and $0.50/sample for all others sample types.

For more information contact Professor Andrea Grottoli at

All surface mail correspondence can be sent to:
Stable Isotope Biogeochemsitry Laboratory
School of Earth Sciences
The Ohio State University
125 South Oval Mall
Columbus, OH 43210