CIQTEK EPR200M is an X-band benchtop electron paramagnetic resonance/electron spin resonance (EPR or ESR) spectroscopy. Based on its high sensitivity and stability, it offers an economical, low-maintenance, and user-friendly experience for EPR study and analysis. *Accessories: Liquid nitrogen variable temperature with cryostat; 4 mm outer diameter sample tube; Goniometer; Light system; Electrolytic cell; Flat cell.