The ELEXSYS-II EPR spectrometer series is a research platform delivering outstanding performance and flexibility for The ultimate EPR System for Life Science, Materials Science and Quantum Computing .


Rapid Scan-EPR is a revolutionary technique that can improve the signal to noise ratio and significantly decreases the acquisition time (down to milliseconds). The main advantage of RS-EPR comes from the later onset of signal saturation, allowing higher microwave powers to be used. This increases the signal amplitude relative to CW-EPR, leading to a much higher signal-to-noise ratio. The short acquisition time in RS-EPR allows extensive signal averaging and very high time resolution. Compared to CW-EPR, RS-EPR delivers higher signal to noise in the same total experimental time. With sweep times as low as 10 microseconds, short lived EPR species can be observed and their changes can be followed with unprecedented time resolution.

Impressive signal-to-noise gain vs CW-EPR.
Reaction monitoring with unprecedented time resolution.
Available as an accessory for EMXplus and ELEXSYS systems. „„
Low temperature compatible (4K -300K).

The Bruker EMXplus provides premium performance for EPR research. It features several 2D operation modes where the second axis can be time, temperature, goniometer angle or microwave power.

Embodying a new EPR philosophy

Premium performance for routine research

The EMXmicro represents a new digital generation of CW-EPR spectrometers from Bruker. It is a highly integrated digital spectrometer featuring field controller and signal processor to provide researchers with unsurpassed resolution and precision.

Decreased size,

increased performance

Expand your analytical capabilities with EPR technology. The Bruker Magnettech ESR5000 provides both academic and industrial laboratories with X-band research grade sensitivity plus a wide field range, all in a compact and easy-to-install benchtop solution.

High performance

Compact design

The modular Flexline resonators are a unique solution for the demands in CW- and FT-EPR. They are the backbone of all pulse-EPR applications with the multi-frequency & multi-resonance ELEXSYS platform.

Multi-Frequency Resonators

for CW & FT EPR

To further enhance your experimental freedom, Bruker BioSpin provides an assortment of EPR Spectrometer accessories and options. This section summarizes the most common accessories and options. To list them all would certainly go beyond the scope our web presentation. Please contact us for further information, also in cases where you would need a tailored solution

Pulse-EPR Accessories

S-Band FT Upgrade Bruker BioSpin offers a diverse range of accessories to enhance the capabilities of the ELEXSYS pulse-EPR spectrometers (E580 and E680).

The heart of modern EPR spectroscopy is the smooth, efficient collection of data coupled with the availability of targeted processing and meaningful spectral simulations. In response to these requirements, Bruker EPR has developed dedicated software suites for the ELEXSYS and EMX product lines.
The range of software solutions enable reliable and reproducible acquisition and analysis of EPR data by people of all levels of expertise, and across spectrometer configurations ranging from continuous wave EPR, to pulsed EPR, and EPR imaging.

Xepr software

Disentangle magnetic field dependent from independent terms
Multi-frequency EPR is the tool to disentangle magnetic field dependent from independent terms. Bruker BioSpin's EPR product range currently encompass two orders of magnitude in microwave frequencies:

  • L- and S-Band: 1 GHz and 3.5 GHz
  • X-Band: most common frequency at ca. 9.8 GHz
  • Q-Band : 34 GHz
  • W-Band: at 94 GHz
  • mm-wave: 263 GHz

While the advantages of high frequency EPR are obvious, low frequency EPR is the perfect choice for large samples and in particular in-vivo studies (ELEXSYS E540).
Multi-frequency EPR spectra renders simulation much more effective. Also, motion effects can be studied over a wide temporal range.