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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-Plus is designed for CW-EPR applications. It is a powerful analytical tool for routine EPR research. EPR200-Plus has excellent sensitivity performance due to the use of a 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 and safety, pollution reduction, 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 enables the detection of long-living radicals produced by irradiation to identify foods, such as irradiated foods containing cellulose, bone and crystal sugar.



ESR method - Detection of irradiated foods containing cellulose

DB32/T 1269-2008  ESR

ESR method-Detection of irradiated agricultural products containing crystal sugar 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 solid wave source

Frequency range

9.2-9.9 GHz

Microwave power

Max 200 mW

Power attenuation

0-60 dB, 1 dB step

Modulation field amplitude

Max 20 Gauss

Magnetic field strength

1.5T (0.7T and 1.8T optional)

Field homogeneity

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

Field stability

Better than 10 mG/h


3 × 109 spins/(G·√Hz)

Sample temperature range

100 K – 475 K

(4 K – 300 K or 300 K–800 K optional)


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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