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CIQTEK - Model EPR200 PLUS -X-band CW-EPR Spectrometer
Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) spectroscopy is a method for studying materials paramagnetic species. EPR spectroscopy is particularly useful for studying metal complexes or organic radicals. EPR200 is designed for CW-EPR application. It is a powerful analytical tool for routine EPR research. EPR 200 has excellent sensitivity performance due to the use of low-noise microwave source and high-Q resonator. It is also suitable for quantitative EPR research, such as EPR(ESR) dating and EPR tooth dosimetry research. It features several 2D operation modes where the 2nd axis can be microwave power, time, temperature, and goniometer angle.
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Irradiation food monitoring
Food irradiation technology plays an irreplaceable role in ensuring food health, safety, reducing pollution and chemical residues. Under the action of ionizing radiation, the covalent bond of internal compounds will split and produce a large number of radicals. Electron paramagnetic resonance technology relies on the detection of long-lived radicals produced by irradiation to identify foods, such as irradiated foods containing cellulose, bone and crystal sugar.
- Indicators : Parameters
- Microwave source : Low noise Gunn oscillator
- Frequency range : 9.2-9.9 GHz
- Microwave power : Max 200 mW
- Power attenuation : 0-60 dB, 1 dB step
- Modulation frequency : 100 kHz,50 kHz,25 kHz,12.5 kHz,6.25 kHz
- Modulation field amplitude : Max 20 Gauss
- Magnetic field strength : 0.7T（1.5T,1.8T Optional)
- Field homogeneity : Better than 10 ppm@10 mm × 10 mm × 10 mm
- Field stability : Better than 10 mG/h
- Sensitivity : 3 × 109 spins/(G·√Hz)
- Sample temperature range : 4 K – 300 K or 100 K – 475 K