Please be advised that the iLab software interlock mechanism will be undergoing maintenance from 7:00PM to 7:30pm on Friday, 6/2/2023.

This activity is required to enhance the security of the university-hosted iLab infrastructure. This maintenance was originally schedules for 5/12/2023, but did not occur due to scheduling conflicts.

We do not anticipate any service interruption; however, we advise scheduling software interlock activity outside this window.

We apologize for the inconvenience this may cause. If you have any questions or concerns, you may reach out via the RII Core Facilities IT ticket system.

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CBC EPR Facility


Overview of Services

The electron paramagnetic resonance (EPR) Facility of the Department of Chemistry and Biochemistry performs, on a fee-for-service basis, EPR and related measurements and interpretation of the obtained data by request for all University of Arizona research groups and external customers. Typical spectroscopic problems addressed by the EPR facility are identification of paramagnetic centers, elucidating their structure (e.g., coordination environment of metal centers of enzymes), and distance measurements between the paramagnetic centers (e.g. between the electron transfer cofactors or spin labels in biological systems). Two EPR spectrometers are available: the continuous wave (CW) X-band spectrometer (Bruker Elexsys E500) operating at the microwave X and Q bands (9-10 GHz and 34 GHz, respectively) and a homebuilt broadband (2-40 GHz) pulsed instrument. Electron-nuclear double resonance (ENDOR), variable temperature and low-temperature (3.8 – 300K) measurements are available for both CW and pulsed instruments.


Virtual Tour of the Facility



Dr. Andrei Astachkine (Astashkin)
Staff Scientist

Brooke Beam Massani, Ph.D.|Director of RSS

Jennifer Rascon | Coordinator, Budget and Finance | 520-626-7722


Location and hours of operation

Hours      Location

Mon- Fri/ 8 am - 5 pm

     EPR: CSML room 110A

Links and Resources


Name Role Phone Email Location
Andrei Astachkine (Astashkin)
Staff Scientist
1306 E. University Blvd. Tucson, AZ 85721, CSML room 110A