Electron microscopes should be able to use sheet film, although a digital photographic system is preferred. The minimum resolution required for lattice image and point-to-point measurements is 0.2 nm.
An objective, intermediate, and projector lens system should be part of electron microscope device. The preferred systems are of the auto-focusing type.
Water interruption, diffusion pump heater failure, and vacuum failure are the required safety indicators. Facilities should also consider scanning capability as an option when purchasing an electron microscope, depending on their needs.
Facilities must place electron microscope devices in a room large enough to accommodate all necessary components, such as: vacuum systems and power-supply units. The designated electron microscope room should be temperature-controlled with lights that can be dimmed or turned off.
Facilities must consider additional costs for sample preparation equipment and physical facilities, as well as electron microscope mounts, filaments, and grids. They should also know that TEM have limited clinical use, require auxiliary equipment for operation, and need complex specimen preparation.

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