The Tecnai G2 F20 is a highly advanced, state-of-the-art 200 kV scanning transmission electron microscope (S/TEM) with an unrivalled task-oriented user interface. Running under Windows� XP operating system, it offers high performance with versatility, high productivity with ease of use, and all in a personal environment. The accessories that may be fitted onto these systems e.g. STEM, CCD cameras, EDX detectors, and energy filters are embedded into the user interface, allowing differently experienced operators to fully utilize the functionality of the total system through one coherent interface.