EPR Spectrometers

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   Bruker ELEXSYS EPR Spectrometer Systems (2)

Special Features

Super X bridge, high dynamic range (90 dB), X-band, 10-inch magnet, Super Hi-Q resonator, ER 4103TM cylindrical resonator, ER 4116DM dual-mode TE102/TE012 resonator ER 4117D-R dielectric resonator, ER 4117D-M dielectric mixing resonator, ER 4119HS-WI high-sensitivity optical resonator, and liquid nitrogen cryostat. One of the ELEXSYS spectrometers is equipped with field frequency lock, helium cryostat, Bruker DICE ENDOR with ENH01252 cavity, A300 RF power amplifier (0.3 to 35 MHz), and 3100L RF power amplifier (250 kHz to 105 MHz). Bruker E-600 series W-band CW-EPR (including W-band cylindrical resonator, W-band bridge, superconducting magnet, room temperature sweep coils, and cryostat).

  Bruker ELEXSYS 580 Pulsed Spectrometer

Special Features

Pulse X-band spectrometer and Q-band with DEER, DQC, and ENDOR capabilities at cryogenic temperatures.

Applications

To measure long-range distances between paramagnetic probes and/or coupled nuclei within biomedically-relevant proteins and peptides.

  Bruker EMX Spectrometer

Special Features

Standard high-quality X-band research instrument.

Applications

Photoexcited paramagnetic states; spin-label studies; spin-label studies of cellular membrane fluidity and oxygen uptake.

  Time-Domain ESR Spectrometer at 9 GHz with 9-inch Magnet

Special Features

Saturation recovery capability to 0.1 microsecond; very high speed data acquisition system.

Applications

Measurement of T1 of spin labels; measurement of transient response of spin systems to various excitations.

  Low-Frequency EPR Spectrometer Station

Special Features

CW and NARS spectroscopy at 0.5–1 GHz, 1–2 GHz, 2–4 GHz, and 4–8 GHz at temperatures down to 15–20 K.

Applications

Transition metal EPR studies, protein distance measurements.

  Varian E-9 EPR Multifrequency Spectrometer

Special Features

0.5 to 1 GHz bridge; L-band 1-2 GHz bridge; S-band 2-4 GHz bridge; C-band 4-8 GHz bridge; K-band 18 GHz bridge; Q-band 35 GHz bridge; various loop-gap resonators; liquid helium cooling at all of the above frequencies (down to 15-20 K).

Applications

Transition metal EPR; forbidden transitions; in vivo studies on mice; study of very small samples at 35 GHz.

  Varian E-109 Century Series EPR Spectrometers

Special Features

Field-frequency locks; photomodulation from dc to 5 kHz; saturation transfer spectroscopy; excellent sensitivity; loop-gap resonators.

Applications

EPR of free radicals in solution; EPR of metal complexes in frozen solution; photoexcited paramagnetic states; spin-label studies; spin-label studies of cellular membrane fluidity and oxygen uptake.

  Modified Varian E-110 Q-Band (35 GHz) Spectrometer Station

Special Features

High sensitivity, low phase noise Q-band microwave bridge on a varian-based console and magnet system.

  Multiquantum Q-Band Spectrometer with 10-inch Bruker Magnet

Special Features

Multiquantum and saturation recovery spectroscopy at 35 GHz.

Applications

Resolution of multiple spectral components that arise from conformational equilibria.

  W-Band Spectrometer

Special Features

92.5–95.5 GHz CW and saturation recovery spectrometer. Can measure T1s to 200 nS.

Applications

Specialized for use with room-temperature liquid-phase aqueous samples.

Contact Us

National Biomedical EPR Center
Department of Biophysics
Medical College of Wisconsin
8701 Watertown Plank Road
Milwaukee, WI 53226-0509

(414) 955-4308
(414) 955-6512 (fax)
EPRCenter@mcw.edu


Candice S. Klug, PhD
Professor of Biophysics / Director of National Biomedical EPR Center
(414) 955-4015
candice@mcw.edu


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8701 Watertown Plank Road
Milwaukee, WI 53226
(414) 955-8296
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Page Updated 08/10/2016
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