onto which carbon is deposited, the Formvar is then dissolved away. For coating take a clean, dry microscope slide and put. It in a coupling jar having 0.5% Formvar solution in chloroform. After five seconds with raw the slide smoothly from the coupling jar and allow it to dry. Cut the film around the edges. Breath heavily on the film. Float off the Formvar membrane by lowering th slide at a shallow angle into a bowl of clean water filled upto the rim. Place clean grids on the floating film by keeping dull side downwards. Using a flat surface of clean microscope slide, push he film down into the water. Smoothly and quickly turn the slide in such a way that the film is lifted out. The film can also be fished out from water by simply lowering the Parafilm held horizontally without pushing the film in the water. Dry the film.
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