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benchtop EPR spectrometer
benchtop EPR spectrometer

X-Band Benchtop EPR Spectrometer | EPR200M

Research-grade EPR performance for free radicals, transition metal ions, and paramagnetic defects in a compact benchtop system.

CIQTEK EPR200M is a compact X-band benchtop electron paramagnetic resonance (EPR/ESR) spectrometer for the detection and characterization of free radicals, transition metal ions, and paramagnetic defects.

Combining high sensitivity, stable performance, and intuitive operation, it supports applications including spin trapping, catalysis, defect and vacancy analysis, electrochemistry, and materials characterization.

300+ EPR Systems Worldwide | 200+ Peer-Reviewed Publications
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High sensitivity and stability
High Sensitivity & Stability
Detect EPR signals with stable, repeatable performance for reliable routine and research measurements.
Easy EPR operation
Easy to Learn & Operate
Intuitive software and automated workflows help both new and experienced users start measurements quickly.
Compact benchtop EPR spectrometer
Compact Benchtop Design
Bring research-grade EPR capability to the lab while saving valuable bench space.
Automatic and manual EPR tuning
Automatic & Manual Tuning
Use automatic tuning for routine measurements or manual control for advanced experimental optimization.
Quantitative EPR analysis
Quantitative EPR Analysis
Perform fast and accurate spin quantification without the need for additional reference samples.
Flexible EPR experimental options
Flexible Experimental Options
Extend experiments with variable temperature (VT) system, goniometer, in-situ irradiation, and more.
EPR applications in chemistry
CHEMISTRY
EPR in Chemistry
Study reaction mechanisms, radical intermediates, redox processes, coordination compounds, and organic synthesis.
EPR applications in environmental science
ENVIRONMENT
EPR in Environmental Science
Investigate reactive species in photocatalysis, advanced oxidation, pollution control, and environmental free-radical processes.
EPR applications in materials science
MATERIALS
EPR in Materials Science
Characterize defects, vacancies, semiconductors, battery materials, polymers, and magnetic materials.
EPR applications in food science
FOOD SCIENCE
EPR in Food Science
Evaluate food irradiation, oxidative stability, antioxidant activity, oil rancidity, and shelf-life related free-radical processes.
EPR applications in biomedicine
BIOMEDICINE
EPR in Biomedicine
Study antioxidants, reactive oxygen species, metalloenzymes, and spin-labeled biomolecules.
EPR applications in medical research
MEDICAL RESEARCH
EPR in Medical Research
Support radiation dosimetry, radiotherapy research, and studies of radiation-induced paramagnetic species.
Industrial applications of EPR
INDUSTRY
EPR in Industry
Apply EPR to quality control, material aging, defect identification, petrochemicals, coatings, tobacco, and cosmetics.
EPR applications in geoarchaeology
GEOARCHAEOLOGY
EPR in Geoarchaeology
Use EPR for dating and analysis of fossils, quartz, corals, rocks, and soils.
Application of EPR in free radical detection
FREE RADICALS
EPR for Free Radical Detection
Free radicals are atoms or groups containing unpaired electrons and can be formed when covalent bonds are broken by external factors such as light or heat. Relatively stable free radicals can be detected directly and rapidly by EPR, while short-lived free radicals can be studied using spin-trapping techniques. Examples include hydroxyl radicals, superoxide radicals, singlet oxygen-related radicals, and other radicals generated during photocatalytic processes.
EPR signal of vacancy
VACANCIES
EPR for Vacancy Research
A vacancy is a type of point defect in a crystal structure where an atom is missing from a lattice site. Common examples include oxygen vacancies, carbon vacancies, nitrogen vacancies, and sulfur vacancies. EPR can be used in the study of these vacancy-related defects.
EPR spectrum of CuCl2 solid powder
METAL IONS
EPR for Paramagnetic Metal Ion Research
Transition metal ions with unpaired electrons in their 3d, 4d, or 5d orbitals, as well as rare-earth metal ions with unpaired electrons in the 4f shell, can exhibit paramagnetic behavior. These paramagnetic metal ions can be detected by EPR spectroscopy to obtain information about their valence state and structure.
TEMPERATURE CONTROL
Variable Temperature System (VT System)
Precise temperature control from 93 K to 573 K
Temperature changes directly affect electron spin population and dynamic behavior, making temperature control important for EPR research. The EPR200M can be equipped with a liquid nitrogen VT system for measurements from 93 K to 573 K.
epr liquid nitrogen variable temperature system
EPR Liquid Nitrogen VT System
93 K to 573 K
EPR spectra of oxygen vacancies at 100 K
EPR Spectra of Oxygen Vacancies at 100 K
IN-SITU IRRADIATION
In-situ Irradiation Systems
Full range of in-situ irradiation systems with automatic optical filter switching
The in-situ irradiation system supports EPR applications in photocatalysis research. It supports both in-situ and non-in-situ irradiation experiments and can be equipped with three different light sources. A 6-position motorized optical filter switching system enables automatic filter switching for improved experimental efficiency.
Xenon lamp / UV-enhanced xenon lamp
Xenon Lamp / UV-enhanced Xenon Lamp
320–780 nm wavelength range
Mercury lamp
Mercury Lamp
200–650 nm wavelength range
EPR spectra of superoxide anion generation by photocatalytic reaction
EPR Spectra of Superoxide Anion Generation by Photocatalytic Reaction
ORIENTATION-DEPENDENT STUDIES
Automated Goniometer
360° automated goniometer for orientation-dependent EPR studies
The goniometer provides automatic and precise control from 0° to 360°, supporting research on orientation-dependent substances, including crystalline materials, diamonds, and jewelry.
Goniometer
Automated Goniometer
Crystal rotation spectra of ruby standard samples using the automated goniometer
Crystal Rotation Spectra of Ruby Standard Samples Using the Automated Goniometer
SAMPLE HANDLING
Sample Cells
A wide range of sample cells for multiple research uses
Flat Cell
Supports solvent systems with dielectric loss and helps improve detection sensitivity.
Electrolytic Cell
Designed for in-situ electrolysis experiments and online monitoring of electrochemical processes.
Flow Cell and Mixing Cell
Support continuous-flow EPR analysis, in-situ mixing, and reaction monitoring of multi-component samples.
Tissue Cell
Designed for biological tissue samples for EPR analysis in biological and medical research.
Sample Cells
Sample Cells
Sample Cells EPR spectra analysis
Sample Cells EPR Spectra Analysis
EXPERIMENT EXAMPLES
EPR Experimental Solutions
EPR Experiment Cases
EPR spectra of TEMPOL
EPR in Physics
Hyperfine Structure Study and Hyperfine Splitting Measurement
EPR spectra of TEMPOL
EPR spectra of the kinetics of ascorbic acid reduction of Tempol
EPR in Chemistry
The Kinetic Study of Ascorbic Acid Reduction of TEMPOL
EPR spectra of the kinetics of ascorbic acid reduction of TEMPOL
EPR spectra of tea
EPR in Food Science
Persistent Free Radical Detection in Tea
EPR spectra of tea
EPR spectra of hydroxyl radicals captured by PBNs
EPR in Environmental Science
Short-lived Free Radical Testing
EPR spectra of hydroxyl radicals captured by PBNs
ACCESSORY KIT
EPR Experiment Accessory Kit
25 pcs, 4 mm OD quartz tubes
1 sample tube holder
1000 pcs capillary tubes
Sealing clay
1 DPPH standard sample
1 standard sample
1 manganese standard
Tea standard sample
Animal hair standard sample
Coffee standard sample
TEACHING PACKAGE
EPR Teaching Kit
EPR200M Spectrometer
EPR200M Experimental Manual
EPR200M User Manual
EPR200M Teacher's Guide
EPR200M Analysis and Processing Software (with Manual)
AI-ASSISTED EPR ANALYSIS
AI-Powered Spectral Analysis Platform EPRMind
Explore EPRMind for AI-assisted EPR spectral analysis, data processing, and research support.
Experience EPRMind
Advanced Multi-Component Analysis
Advanced Multi-Component Analysis
  • Currently supports 1-, 2-, and 3-component spin-trapping systems.
  • Format-agnostic analysis of experimental information.
  • Automated fitting, component decomposition, and signal assignment.
Comprehensive Spectral Insights
Comprehensive Spectral Insights
  • In-depth hyperfine splitting analysis.
  • One-stop validation guidance.
  • Intelligent literature recommendations to support scientific argumentation.
Publication-Ready Output
Publication-Ready Output
  • Automatically generates SCI-standard spectra and captions.
  • One-click download of fitted data and matching slides.
  • Ready-to-use output with no manual re-formatting required.
  • Simplified workflow for data processing.
AI-Powered EPR Assistant
AI-Powered EPR Assistant
  • Professional real-time EPR expert support.
  • Support for theory, elucidation, and experimental optimization.
  • Research support across the EPR workflow.
CUSTOMER REFERENCES
Trusted by Researchers Worldwide
CIQTEK Benchtop EPR200M Spectrometer at Utrecht University, Netherlands
NETHERLANDS
Utrecht University
On-site installation and user training for EPR200M.
Read the Story →
CIQTEK EPR200M at the University of Bordeaux, France
FRANCE
University of Bordeaux & CNRS
EPR200M delivered in collaboration with CNRS.
Read the Story →
CIQTEK EPR200M at Cornell University, USA
UNITED STATES
Cornell University
Used for biomedical research, teaching, and sample demonstrations.
Watch & Read →
CIQTEK EPR200M at Seoul National University
SOUTH KOREA
Seoul National University
Installed for Prof. Lee Eunsung's research group.
Read the Story →
CIQTEK EPR200M at National University of Singapore
SINGAPORE
National University of Singapore
Delivered to Prof. Chen's group.
Read the Story →
CIQTEK EPR200M at Jeju National University
SOUTH KOREA
Jeju National University
Installation and training completed by BK Instrument.
Read the Story →
RESEARCH HIGHLIGHTS
Published in Science
CIQTEK EPR supported research on catalytic reaction mechanisms and synthesis strategies.
Explore the Research →
200+ Research Publications
CIQTEK EPR systems have supported research across environmental science, organic chemistry, materials science, catalysis, energy, and other fields.
View Publication Highlights →
See EPR200M in Action
EPR200M PRODUCT VIDEO
Meet the CIQTEK Benchtop EPR Spectrometer EPR200M
Get a quick introduction to the EPR200M, its compact benchtop design, and the EPR workflow.
Watch on YouTube →
Related EPR Videos
Customer stories, applications, software, and product overview
Sensitivity
5 × 109 spins/(G·√Hz)
Signal-to-noise ratio (SNR)
≥ 800:1
Operating frequency
9.2–9.9 GHz
Maximum modulation field amplitude
10 Gauss
Magnetic field scanning range
-1,000 to 6,500 Gauss (supports zero-field scanning)
Maximum number of data points per scan
256,000 points
Concentration sensitivity
20 pM
Magnetic field stability
≤ 10 mG/h
Hot Tags : electron spin resonance spectroscopy EPR spectra paramagnetic resonance X band EPR EPR measurement compact ESR EPR electron paramagnetic resonance spectrometer CW EPR spectrometer
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