X-Band CW-EPR Spectrometer | EPR300

The ultra-low noise microwave generation technology combined with weak signal detection technology guarantees the high sensitivity of the EPR (ESR) spectrometer.

The probes can be equipped with optional continuous wave high Q probes, high-temperature probes, dual mode cavities, etc. Meanwhile, the probe can be customized to meet the needs of different scenarios.

The maximum magnetic field strength can reach 1.5 T. The precise magnetic field scanning control technology makes the magnetic field uniformity better than 10 ppm and the long-time stability of the magnetic field better than 10 mG/h, guaranteeing high-quality spectra.

Experienced technical application engineers provide professional EPR (ESR) services to help beginners master the analysis and attribution of EPR spectra.

The combination of time-resolved techniques with EPR (ESR) spectroscopy can be used to study transients such as free radicals or excited triplet states during fast reactions.

High temperature up to 650 K to meet the demand of high-temperature reactions in the petrochemical field and realize in-situ high-temperature EPR detection. Low temperature to liquid nitrogen temperature or even liquid helium temperature, to achieve in-situ detection of weak signals at low temperatures, to help research exploration in the field of chemistry and materials. Fast heat-up and cool-down speeds to meet the needs of variable-temperature testing.

EPR in Paramagnetic Metal lons Research

For transition metal ions (including iron, palladium, and platinum group ions with unfilled 3d, 4d, and 5d respectively) and rare earth metal ions (with unfilled 4f shell), these paramagnetic metal ions can be detected by EPR spectrometer due to the presence of the single electrons in their atomic orbitals, thus obtaining the valence and structure information. The spin states have high and low spins for transition metal ions, which usually have multiple states. Parallel modes in a two-mode cavity allow the detection of integer spin systems.

EPR in Free Radical Detection

Free radicals are atoms or groups with unpaired electrons formed when covalent bonds are broken due to external factors such as light or heat. For relatively stable free radicals, EPR can detect them directly and quickly. For short-lived free radicals, they can be detected by spin trapping. For example, hydroxyl radicals, superoxide radicals, singlet oxygen photoradicals, and other free radicals generated by photocatalytic processes.

EPR in Vacancy Research

Vacancy is a concept in solid-state structural chemistry or materials science, that refers to the structure of the lattice lattice without due atoms. Common vacancies include oxygen vacancies, carbon vacancies, nitrogen vacancies, and sulfur vacancies.

Variable Temperature System (VT System) with Cryostat

Precise temperature control from low to high temperatures

Temperature change directly affects electron spins' state and dynamical behavior, so the temperature control technique is crucial for EPR research. Different temperature ranges can reveal different physical, chemical, and biological processes, providing researchers with a deeper understanding of the nature of substances and reaction mechanisms.

In-situ Irradiation Systems

Full ranges of in-situ irradiation systems with automatic optical filter switching

The in-situ irradiation system effectively supports the EPR applications in photocatalysis research. The system flexibly supports in-situ and non-in-situ irradiation experiments and can be equipped with three different light sources to meet diversified research needs. The 6-position motorized optical filter switching system realizes the automatic switching of filters, which greatly improves the experimental efficiency and brings unprecedented convenience for photocatalytic research.

EPR Goniometer

360° goniometer for EPR studies in orientation-dependent substances

The in-situ irradiation system effectively supports the EPR applications in photocatalysis research. The system flexibly supports in-situ and non-in-situ irradiation experiments and can be equipped with three different light sources to meet diversified research needs. The 6-position motorized optical filter switching system realizes the automatic switching of filters, which greatly improves the experimental efficiency and brings unprecedented convenience for photocatalytic research.

EPR Resonators

Various EPR resonators to meet different experimental requirements

High-Q Resonator: As a general-purpose resonator, the high-Q design offers high sensitivity and is suitable for EPR analysis on most samples. It is compatible with both liquid nitrogen and ultra-low temperature variable temperature systems.

Dual-Mode Resonator: Tailored for analyzing complex systems—such as transition metal and rare-earth ions that display forbidden transitions—this resonator offers dual configurable measurement modes, both perpendicular and parallel, for enhanced experimental flexibility.