- The ultramicrotomo is an instrument commonly used to prepare samples for TEM. Use a glass knife or diamond for cutting ultra-thin sections of specimens included epoxy.
- The sections are approximately 60 to 100 nanometers in thickness and 0.5 to 3 mm in width. Were mounted on grids TEM for viewing.
- The ultramicrotomo is also used to create a surface mirror-smooth on samples mounted in epoxy, applications for which include images secundariias in the SEM and nanoindexación.