The ESR spectroscopy is used in many fields like chemistry, biology, physics and palaeontology. It is also useful for detecting and measure free radicals.

JEOL has a range of ESR spectrometers both for general research applications and for dedicated work on free radicals.
All are characterized by  their high sensitivity and user friendly operation.

A wide range of optional accessories are available for all models.

	JES-FA100
	Specifications Pole diameter: 150 mm Pole gap: 60 mm Max. field: 0.65 T Homogeneity: 1 x 10-5 Sensitivity: 7x109 spins/10-4 T OS: MS Windows NT
	JES-FA200
	Specifications Pole diameter:  180 - 240 mm Pole gap: 62 mm Max. field: 1.3 T Homogeneity:  1 x 10-5 Sensitivity: 5x109 spins/10-4 T OS:  MS Windows NT
	JES-FA300
	Specifications Pole diameter:  300 - 360 mm Pole gap: 75 mm Max. field: 1.4 T Homogeneity:  1 x 10-5 Sensitivity: 5x109 spins/10-4 T OS:  MS Windows NT
	JES-FR30 Free radical monitor
	Specifications Pole gap: 45 mm Max. field: 0.4 T Homogeneity:  1 x 10-5 Sensitivity: 3x1010 spins/10-4 T