Bench-top ESR spectrometer

Next generation electron spin resonance (ESR) spectrometer. State of the art electronics together with improved magnet and resonator design allow for considerable improvement of signal to noise ratio.

ESR spectrometer - MiniScope MS 5000

Magnettech is a pioneer in the field of Electron Spin Resonance (ESR). Our benchtop MiniScope (MS 5000) ESR spectrometer is a research grade device with sensitivity and reliability for demanding applications in the field of ESR spectroscopy. 

flyers for more technical data on request.

Technical specifications

Technical dataMS 5000MS 5000X
Operating frequencyX-bandX-band
Sensitivity8 x 10E9 spins /0.1 mT (8 x 10E9 spins/G)5 x 10E9 spins /0.1 mT (5 x 10E9 spins/G)
Signal to noise ratio600:11000:1
Microwave power1 µW - 100 mW1 µW - 100 mW
Concentration sensitivity10 nM TEMPOL in H2Obetter than 50 pM
Field sweep range625 mT (6250 G)up to 700 mT (7000 G)
Field homogeneity± 5 µT (50 mG) within sample region± 5 µT (50 mG) within sample region
Field stability1.0 µT/h (10 mG/h)1.0 µT/h (10 mG/h)
Sweep resolution (field and time)≥250,000 points≥250,000 points
Reference standardintegrated and motorizedintegrated and motorized
Magnetic field range25 - 650 mT (250 - 6500 G)-10 - 650 mT (-100 - 6500 G, wider field ranges on request)

Higher Sensitivity than large sized EPR/ESR Spectrometers

Why buy an expensive mammoth sized ESR spectrometer when the benchtop MS5000 can do the same job?

This is accomplished by:

  • The use of modern electronic design minimizes the entire electronics to the size of a small notebook. Combination of high frequency circuits for space application enable extraordinary signal to noise ratios.

  • The use of a compact high performance rectangular resonator. This allows for a small magnet air gap and consequently a very compact magnet design. However, sample size up to 8 mm is standard.

Mechanical and Electronics concept

Very compact mechanical design - the entire electronics is based on a few tiny high- tech PCB boards including microwave integrated circuits. There is almost no wiring. This results in high reliability, easy maintenance and service and a very efficient assembly during production, allowing for a high cost effectiveness.

  • The system has extensive automatic self- test and calibration facilities

  • All accessories such as Autosampler, Sample cooling or heating systems, Goniometer and others are connected by a proprietary bus system and can be easily attached to the main ESR system at any time

  • Universal power supply 110 V to 260 V, 50/60 Hz AC which meets world wide safety and EMV standards

  • Maximum power consumption at highest magnetic field is 200 W and the stand-by power consumption between measurements is very low.

  • The spectrometer is completely air- cooled, no water cooling is required

  • Modern software (ESRStudio) for spectrometer Operation and Data Evaluation

RF System and Signal Channel

Saturation Enhanced ESR spectroscopy

ESR- signal intensities according to the individual saturation behavior of ESR- lines. This greatly helps to identify individual lines in complex ESR- spectra. At a given microwave power and temperature, heavily saturated lines exhibit large signals whereas unsaturated lines do not show up at all.

Signal Channel Dynamic better than 140 db.

This enables the detection of extremely weak lines as well as extremely strong lines in the same spectrum. No “amplification factor” or similar needs to be set before the measurement.