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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.
epr1592303268086      epr21590113011346     epr31590113011342
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.

Standard Chinese name


ESR method - Detection of irradiated foods containing cellulose

DB32/T 1269-2008  ESR

ESR method-Detection of irradiated agricultural products containing crystal sugar

DB32/T 2554-2013

Determination of irradiated food for export
ESR method

SN/T 2910.1-2011

Identification of irradiated animal derived foods containing bone
ESR method

NY/T 1573-2007





Microwave source

Low noise Gunn oscillator

Frequency range

9.0-10.0 GHz

Microwave power

Max 200 mW

Power attenuation

0-60 dB, 1 dB step

Modulation frequency

30 kHz,100 kHz

Modulation field amplitude

Max 10 Gauss

Magnetic field strength

8000 Gauss

Field homogeneity

Better than 10 ppm@10 mm × 10 mm × 10 mm

Field stability

Better than 10 mG/h


8 × 109 spins/(G·√Hz)

Sample temperature range

80 K–300 K or

4 K–300 K


CIQTEK Hefei : 1-4F, Area A, E2 Building, Innovation Industrial Park II, High-tech District, Hefei, Anhui

CIQTEK Wuxi : No. 2 Zhanqian Road, Huishan Intercity Railway Station, Huishan District, Wuxi

CIQTEK Shanghai : Room 8405,No.315 Emei Road, North Bund, Hongkou District, Shanghai

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