The JEOL JEM 1200 EXII allows users to perform conventional transmission electron microscopy (TEM) with thin-sectioned specimens, and other transmission electron microscopy with specimens prepared using other methods.


  • Resolution: 0.15 nm lattice
  • Accelerating voltage: 40 to 120kV
  • Magnification: 50x to 500,000x 


The transmission electron microscope can give you 100 times better resolution than the best light microscope. This is possible because electrons accelerated through a series of electromagnetic lenses behave as if they have extremely short wavelengths and can be focused to form a real, enlarged image in the same way that light can be focused by glass lenses. This short wavelength enables the transmission electron microscope to optically separate two points only 2 angstroms apart! Because electrons are so small and light, biological samples must be specifically prepared and cut into 50-nm-thick slices for viewing in the transmission electron microscope.


  • Gatan Orius SC200 CCD camera (bottom-mount)