Purdue Stable Isotope Facility

Overview of Services

Many of the PSI lab’s services are now available to researchers at Purdue and elsewhere on a contract basis. Analytical services currently offered include:

• δ²H and δ¹⁸O water analyses (precision < 1‰, 0.2‰)
• δ¹⁸O organic solid analyses on TCEA-IRMS (precision < 0.3‰)
• δ¹³C, δ¹⁵N, %C, and %N organic and inorganic solids on EA-IRMS (precision < 0.2‰, 0.3‰)
• δ¹³C gas from organic respiration on TGA-IRMS (precision < 0.2‰)
• δ¹⁵N and δ¹⁸O of denitrifiers on continuous-flow IRMS using headspace extraction (precision < 0.1‰, 0.5‰)
• δ¹⁵N, δ¹⁸O, and ∆¹⁷O of denitrifiers on continuous-flow IRMS using headspace extraction+gold tube thermal decomposition (precision < 0.4‰, 0.1‰, 0.3‰)
• A range of chemical and physical sample preparation services

Leadership

Leadership Personnel

Dr. Greg Michalski, Associate Professor
gmichals@purdue.edu
(765)494-3704

Dr. Lisa Welp, Assistant Professor
lwelp@purdue.edu
(765)496-6896

Getting Started

**For Purdue individuals: First-time users should click "Register"; then select "Register using your Purdue Credentials" in upper right.  Returning students will click "Sign In"

**For Non-Purdue individuals: Before you register, you must be assigned a Business Partner Number and given Purdue credentials to register/login.  

    Please contact the center manager for further information.

**In addition, the Purdue Stable Isotope Facility requires 'Access Approval' to use it's core.  

Location and hours of operation

Links and Resources

1. Purdue Stable Isotope Facility

Contacts