Benchtop EPR (ESR) Spectroscopy | EPR200M

X-band Benchtop Electron Paramagnetic Resonance Spectrometer

EPR200M

CIQTEK EPR200M is an X-band benchtop electron paramagnetic resonance / electron spin resonance (EPR or ESR) spectroscopy.

Based on the high sensitivity and stability, it offers an economical, low-maintenance, and user-friendly experience for scientific researchers and industrial users.

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*Accessories: Liquid nitrogen variable temperature with cryostat; 4 mm outer diameter sample tube; Goniometer; Light system; Electrolytic cell; Flat cell.

EPR Features

Reliable & Stable

High sensitivity, accuracy, and stability.

Flexible & Easy-to-Use

Integrated control software and data processing software.

Benchtop Convenience

Highly integrated, lightweight, and compact for desktop use.

Easy Tuning

Support manual and automatic tuning.

Accurate Quantification

Optional built-in standards for accurate g-value and quantitative EPR (ESR) measurements.

Diverse Accessories

Automated goniometer, in-situ optical stimulation system, low-temperature measurements.

Core Technology

EPR Application Fields

EPR in Chemicals

Study of structures of coordination compounds, catalytic reactions, free radicals detection, reactive oxygen species (ROS) detection, chemical kinetics (reaction kinetics), and small-molecule drugs.

EPR in Environmental Science

Environmental monitoring includes air pollution (PM2.5), advanced oxidation wastewater treatment, transition metals heavy metals, environmentally persistent free radicals, etc.

EPR in Materials Science

Single-crystal defects, magnetic material properties, semiconductor conduction electrons, solar cell materials, polymer properties, fiber optic defects, catalytic material detection, etc.

EPR in Biomedical

Antioxidant characterization, metalloenzyme spin labeling, reactive oxygen species (ROS) and enzyme activity characterization, occupational disease protection research, nuclear radiation emergency medical rescue diagnosis classification, cancer radiotherapy irradiation related research, etc.

EPR in Food Science

Irradiation dose of agricultural products, beer flavor shelf life, edible oil rancidity detection, alanine dosimeter, antioxidant properties of food and beverage, etc.

EPR in Industrial

Coating aging research, cosmetic free radical protection factor, diamond trap identification, tobacco filter efficacy, petrochemical free radical quality control, etc.

EPR Applications

Detection of Free Radicals. Free radicals are atoms or groups with unpaired electrons formed when a compound molecule is subjected to external conditions, such as heat and light, and the covalent bonds are split evenly. For the more stable free radicals, EPR (ESR) allows direct and rapid detection of them. For short-lived free radicals, they can be detected by means of self-selected capture, such as hydroxyl radicals, superoxide radicals, singlet oxygen, etc., generated by photocatalytic processes. EPR spectrum of different free radicals trapped by DMPO. EPR spectrum of the capture of singlet oxygen by TEMP. EPR spectrum of Perylene. EPR spectrum of Vanadyl acetylacetonate. Perpendicular-mode and parallel-mode EPR spectrum of CR3+ doped CSAL(SO4)2-12H2OEPR spectrum. Paramagnetic Metal Ions. For transition metal ions (including ferrous, palladium, and platinum ions, which have unfilled 3d, 4d, and 5d shells in that order) and rare earth metal ions (which have unfilled 4f shells), EPR (ESR) can be used to detect these paramagnetic metal ions to obtain valence and structure information due to the single electron in their atomic orbitals. The self-selected states are of high and low spin for transition metal ions, which usually have multiple valence states. The parallel mode in the two-mode cavity allows detection of the integer spin regime. Conduction Electrons in Metal. The EPR (ESR) lineshape of conduction electrons is related to the size of the conductor, which is important in the field of lithium electronic batteries. EPR (ESR) enables non-invasive probing of the inside of the battery and the study of lithium deposition processes close to the real situation, from which the microscopic size of lithium metal deposits can be inferred. Free Radical Pairs/Triplet States. For very short-lived species such as the triplet state, testing can be carried out by transient EPR (ESR). TR-EPR spectrum of TMDPO. A vacancy is a concept in solid-structure chemistry or materials science, referring to structures without proper atoms in the lattice. Common vacancy includes Oxygen Vacancy, Carbon Vacancy, Nitrogen Vacancy, Sulfur Vacancy, etc. EPR spectra of oxygen vacancies and sulphur vacancies

EPR Accessories

Liquid Nitrogen Variable Temperature System with Cryostat

In-situ low (high) temperature testing is possible.

In-situ Optical Stimulation System

Based on the xenon lamp, the full wavelength in-situ illumination demand from UV, visible to near-infrared light is realized, effectively helping the development of scientific research in the field of photocatalysis.

Goniometer

Software control enables automatic corner turning, which can be used to study the properties of crystals with different orientations.

Liquid Nitrogen Variable Temperature Unit

Finger Liquid Nitrogen Dewars

Light Unit

Standard Sample

4 mm OD Sample Tube, Flat Cell

EPR Analysis

Parallel magnetic field signal of a diamond

Signal of TEMPOL after deaeration

Various free radicals signals

Cu valence

Featured News & Applications

CIQTEK EPR Spectroscopy Contributes to Scientific Publications for Research Users

CIQTEK EPR (ESR) spectroscopy has helped several research users get scientific data and the results were finally published in high-level journals.

CIQTEK EPR (ESR) at Conferences and Exhibitions Worldwide

Environmental Contaminant Detection - EPR (ESR) Applications

EPR is the only wave spectroscopy technique that can directly detect and study substances containing unpaired electrons, and it plays an important role in the detection of environmentally persistent free radicals (EPFRs) due to its advantages such as high sensitivity and real-time in situ monitoring.

Chongqing University Launches Analysis Services using CIQTEK EPR (ESR) Spectroscopy

The Analysis and Testing Center of Chongqing University officially launched its EPR analysis and testing services to the society based on CIQTEK EPR spectroscopy on Sep.6th, 2021.