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ALERT ATTENTION ⚠️
In observance of a holiday, Agilent CrossLab/iLab Operations Software Support Help Desk will be closed during U.S. hours on Monday, September 1st, 2025. We will resume regular U.S. support hours on Tuesday, September 2nd, 2025. EU and APAC Support will remain open during this time. For urgent matters, please add "Urgent" to the ticket/email subject or press "1" when prompted to escalate a call on the iLab Support phone, and we will prioritize those requests first.
Located in the Stephenson Research and Technology Center on the University of Oklahoma Norman campus, the Stable Isotope Measurement Facility (SIMF) provides analytical services to researchers in a variety of disciplines. SIMF offers analyses of carbon and nitrogen isotopes via continuous-flow isotope ratio mass spectrometry and cavity ring-down spectroscopy. Our facility seeks to further innovative research at OU and serve the broader research community through hands-on training and fostering collaboration between students, post-doctoral associates, faculty, and visiting scholars. The following are the current services that we provide:
• C and N in solid, organic materials such as plants and soils including both natural abundance and enrichment/tracer studies
• Carbon isotope analysis of CH4 and CO2
| Item | Internal (OU) | External | Commercial |
| Dual 13C & 15N natural abundance sample - plants and tissues | $6.01 | $9.32 | $15.33 |
| Dual 13C & 15N natural abundance - Difficult samples (Filters, Soils, Sediments, Salts) | $7.63 | $11.83 | $19.46 |
| 13C OR 15N (single isotope) natural abundance | $5.36 | $8.31 | $13.67 |
| 13C OR 15N (single isotope) natural abundance - Difficult samples (Filters, Soils, Sediments, Salts) | $7.31 | $11.33 | $18.64 |
| Solid Sample Special Handling Surcharge | $7.50 | $11.63 | $19.13 |
| Dual 13C & 15N enriched/tracer | $7.31 | $11.33 | $18.64 |
| Dual 13C & 15N enriched/tracer - Difficult samples (Filters, Soils, Sediments, Salts) | $9.58 | $14.85 | $24.43 |
| 13C OR 15N (single isotope) enriched/tracer | $6.98 | $10.82 | $17.80 |
| 13C OR 15N (single isotope) enriched/tracer - Difficult samples (Filters, Soils, Sediments, Salts) | $8.60 | $13.33 | $21.93 |
| Solid Sample Special Handling Surcharge | $7.50 | $11.63 | $19.13 |
| 13C in CO2 | $7.79 | $12.07 | $19.86 |
| 13C in CH4 | $7.79 | $12.07 | $19.86 |
| Sample Grinding | $1.50 | $2.33 | $3.83 |
| Sample Weighing | $1.50 | $2.33 | $3.83 |
| Tim Filley, PhD | Director | filley@ou.edu | |
| Jani Sparks, PhD | Manager | 405-325-1636 | jmsparks@ou.edu |
| Hours | Location |
|
Monday-Friday |
101 David L Boren Blvd |
| Name | Role | Phone | Location | |
|---|---|---|---|---|
| Jani Sparks, PhD |
Manager
|
405-325-1636
|
jmsparks@ou.edu
|
Stephenson Research and Technology Center
|