A simple procedure for mounting wrinkle-free sections on formvar-coated slot grids

This paper describes a simple technique for consistent production of clean, unwrinkled, flat thin (500-1000 A) sections for TEM and thick (1/2-1 micron) sections for HVEM mounted on Formvar-covered slot grids for use in conventional and high voltage electron microscopy. The technique centers around use of a Formvar-covered aluminum supporting rack onto which slot grids that contain sections suspended in water are placed.