Benchtop EPR Spectrometer | EPR200M

Application of 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 a type of point defect in a crystal where an atom is missing from one of the lattice sites. Common vacancies include oxygen vacancies, carbon vacancies, nitrogen vacancies, and sulfur vacancies.

EPR in Paramagnetic Metal lons Research

Due to the presence of unpaired electrons in the atomic orbitals of 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 to obtain valence and structure information.

Variable Temperature System (VT System)

Precise temperature control from low to high temperatures

Temperature change directly affects electron spin population 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.
EPR200M can be equipped with a liquid nitrogen VT system, which realizes precise temperature control from the liquid nitrogen temperature zone (93 K) to the high-temperature zone (573 K).

In-situ Irradiation Systems

Full range 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.

Automated Goniometer

360° automated goniometer for EPR studies in orientation-dependent substances

The goniometer achieves automatic and precise control from 0° to 360°, providing powerful technical support in orientation-dependent substances research, including crystalline materials, diamonds, and jewelry.

Sample Cells

A wide range of sample cells for multiple research uses

Flat cell: Support solvent systems with dielectric loss, significantly improving detection sensitivity.

Electrolytic Cell: Designed for in-situ electrolysis experiments, easily realizing online monitoring of electrochemical processes.

Flow Cell and Mixing Cell: Equipped with a peristaltic pump. For the in-situ continuous-flow EPR analysis. Easily accomplish in-situ mixing and reaction monitoring of multi-component samples.

Tissue Cell: Designed for biological tissue samples, providing convenient EPR analysis in the biological and medical fields.

EPR Experimental Solutions

EPR Experiment Cases

EPR Experiment Accessory Kits