This "is not just a spectrometer, it’s the EPR research platform with world-record sensitivity in CW-EPR at X-Band and outstanding performance and flexibility". The ELEXSYS series offers unparalleled freedom in acquisition modes from basic CW-EPR, to CW- and Pulsed ENDOR, to FT-EPR and ELDOR (DEER) at microwave frequencies ranging from 1 GHz (L-Band), to 94 GHz (W-Band). As a platform, the ELEXSYS is designed for open-ended expandability with multi-frequency and multi-resonance capabilities with seamless integration.

Main parameters:

• X-Band weak-pitch ratio - 3000 : 1

• X-Band Microwave Bridge - ER 049X SuperX

• Super-High-Q Cavity - ER 4122SHQE

• Lock-in detector - E27H

• L-Band resonator diameter - 23 mm

From the site www.bruker-biospin.de

The second generation of W-band super conducting magnet features a horizontal field, a main coil with 6 T sweep range, permanent leads and a 2 kG high resolution sweep coil. There are currently two W-band systems, the E600 and E680. The former is optimized for CW-EPR experiments at 94 GHz, while the E680 operates in both CW- and FT-mode. These high-class research instruments provide a maximum in performance and flexibility while still being easy to operate.

Main parameters:

• Precise microwave power setting over a 60 dB range in W-band

• All FT-EPR relevant parameters such as pulse power, width and phase are set and monitored on the intermediate frequency (IF) at X-band

• High spectral purity, and sensitivity, are achieved by the combination of a fixed frequency oscillator and a PLL circuit

From the site www.bruker-biospin.de

Main parameters:

• 24 bit center field resolution, corresponding to a precision of < 10^-7 mT 24 bit signal digitization

• Up to 256,000 points for field sweep

• Full freedom in magnetic field sweep from 100 mG up to the maximum field

• Independent of conversion time, large and small signals can be detected with one gain setting

• Dual channel, simultaneous detection of 1st and 2nd harmonic (or 0° and 90° modulation phase)

• Sensitivity up to 2000:1 (International Weak-Pitch Protocol) with PremiumX

• Easy upgrade to multi-frequency CW-EPR from L-band to Q-band

• CW-ENDOR for the first time in this spectrometer class

• Range of accessories and dedicated resonators

From the site www.bruker-biospin.de

Main parameters:

• Operating frequencies - 9.5 GHz (X-band) and 35 GHz (Q-band)

• Microwave power - 200 mW max

• Scan range - 0 - 2 T

• Modulation amplitude - 4.0 mT max

• Gain - 10⁵ max

• First and second derivative plotting

• Broad-line analysis

From the site saif.iitm.ac.in

The X-band 8400 EPR spectrometer is a completely self-contained instrument, incorporating a microwave Gunn oscillator, microwave bridge apparatus (circulator, reference arm, etc.), a type TE₁₀₂ microwave cavity, lock-in amplifier circuitry, field controller, electromagnet and power supply in one table-top sized cabinet operating under control of a personal computer. Its compact electromagnet and power supply result in the spectrometer's desktop size. This along with its ability to operate in the absence of water lines for cooling, means that the 8400 is truly portable. Its automated features make it easy to use and easy to learn to use.

Main parameters:

• Frequency - 9.1 - 9.6 GHz

• Microwave power - 100 mW min (200 mW at 9.4 GHz)

• Sensitivity - 5x10⁶ spins/G (5x10¹⁰ spins/T)

• Magnetic field strength - 100 - 7000 G (0.01 - 0.7 T) at homogeneity 10^-5

• Resolution - 0.07 G/cm (7 μT/cm)

• Cavity Resonantor mode - TE₁₀₂

• Cavity Resonantor unloaded Q-factor - 5000

• Polepiece gap - 14 mm

• Field uniformity - 0.01 G/cm³ (1 μT/cm³)

• Field stability - 1x10^-5 hour^-1

• Modulation frequency - 100 kHz

• Modulation amplitude - 10 G (1 mT) max

• Field setting resolution - 1 G (0.1 mT)

• Sweep time - 30 - 3600 s with 12-bits resolution

• Sample tube ∅ - 5 mm

• Sample temperature range - 25 - 45 °C thermostated with 0.5 °C accuracy

• Dimensions - 240×600×600 mm

• Weight - 60 kg

• Power - single phase, 500 VA, 110/220/240 VAC, 50/60 Hz, 3A

• Cooling - not required below 4000 G (400 mT); 0.25 water liter/min otherwise

• Operation temperature - 10 - 50 °C

• Computer OS - MS Windows or DOS capable

From the site www.resonanceinstruments.com

eScan device is suitable for specific quality control applications as well as for medical and pharmaceutical R&D applications.

Main parameters:

• Research grade sensitivity

• Predefined acquisition schemes

• Fully automatic data evaluation

• User level security

• Automatic instrument validation and system data logging

• Easy to learn windows TM software

From the site www.bruker-biospin.com

Main parameters:

• Magnetic field range - from 0.01 T to 0.7 T at homogeneity 10^-5

• Sensitivity - 10⁺¹⁵ spin/T, Microwave power 200 mVA at 9.4 GHz

• Sample temperature range - from 25 to 45 °C, thermostated at 0.5 °C accuracy

• Automatic tuning of the spectrometric system for each sample

• Registration and processing of ESR spectra under computer control

• High stability and noise-immunity of measured spectra

• Dimensions - 240×600×600 mm

• Weight - 60 kg

From the site www.medinnovation.de

Main parameters:

• Operating frequency - 9.72 GHz

• Sensitivity - 4×10¹⁰ spins/0.1 mT

• Resonance instability - 3×10^-5 h^-1

• Polarizing magnetic field induction - 0 - 0.7 T

• Error of magnetic field setting - 1% max

• Period of magnetic field scanning - 30 sec min

• Amplification region - 1 - 1.6×10⁵

• Microwave power in cavity - 400 mW max

• Frequency of magnetic field modulation - 100 kHz

• Region of magnetic field modulation - 2×10^-3 - 1.0 mT

• Cavity mode - H₁₀₂

• Unloaded cavity Q-factor - 5000

• Inner sample diameter - 10 mm

• Power supply - 230 V AC

• Interface - RS232

• Dimensions - 480 (W) × 200 (H) × 475 (D) mm³

• Weight - 60 kg

Main parameters:

• High sensitivity (high performances) of device

• Convenience in operation and service of the device. The spectrometer is fully-automated; the computer itself conducts the adjustment of spectrometer during the sample change

• Compactness and a small weight, it is an easily transferable desktop device

• Reliability and the low price of the device. The spectrometer is executed in monoblock performance; installation and adjustment of the device are provided by highly professional personal of the enterprise on precision equipment. All items the device are the careful checking

From the site www.belsens.com

Main parameters:

• Working frequency - 9.175 GHz

• Sensitivity - 1×10¹⁰ spin/0.1 mT Hz

• Microwave power in a cavity - 200 mW max

• Intermediate frequency - 100 MHz

• Pulse change in microwave power - 20, 40, and 60 db

• Microwave pulse duration - 10^-4 - 4.29×10³ ms

• Microwave pulse delay - 0 - 4.29×10³

• Induction of stationary magnetic field - 0.328 T

• Homogeneity of magnetic field - 10^-4

• Magnetic field change region - 0.03 T

• Modulation frequency of magnetic field - 0 and 12 - 20000 Hz

• Modulation amplitude of magnetic field - 0.0003 - 3 mT

• Weight - 25 kg

• Sample dimensiones - 5×5×10 mm³

• Device dimensions - 620×490×170 mm³

• Power supply - 200 AV

Alanine dosemetry regime

• Irradiation registered - gamma, electrones

• Energy of photons and electrons - 0.3 - 50 meV

• Range of measured dose - 1 - 10⁵ G

From the site www.midural.ru

Main parameters:

• Working frequeny - 9.3 - 9.6 GHz

• Microwave power in a cavity - 100 mW max

• Magnetic field induction - 3000 - 3700 Gauss

• Distance between magnet poles - 22.5 mm

• Diameter of the poles' tips - 90 mm

• Period of the magnetic field retuning - 0.5 - 64 minutes

• Sensitivity - 10^-12 diphenylpicrilhedrosyl mole

• Stability of resonance conditions - 2×10^-5 per hour max

• Expluatation conditions - 15 - 35 °Ñ.

• Power supply - 220 V, 50 Hz

From the site www.fizepr.ru

Main parameters:

• Operating frequency - 9.35 GHz

• Microwave power - 1.0 mW

• Permanent magnetic field - 1.32 T

• Region of magnetic field sweeping - 0 - 20 mT

• Magnetic field modulation - 0.02 - 0.2 mT

• Modulation frequency - 33 kHz

• Sensitivity - 10¹⁴ spins/0.1 mT

• Cavity mode - H₁₀₂

• Unloaded cavity Q-factor - 4000

• Sample diameter - 4 mm

• Accumulation number - 1 - 255

• Interface - RS232

• Power supply - +12 V DC or 230 V AC

From the site microspec-x.com