Quantifoil R grids, holey carbon film, 3.5um/1.0um

R 3.5/1 may be preferred over foils with smaller holes if the carbon film should be outside the frame of the image.This option can be desirable in the case of extended objects, such as filamentous objects, for example. QUANTIFOIL is delivered as a carbon foil; it can be reinforced with plastic film. The standard thickness for the carbon foil is 12nm; other thicknesses between 10 and 25nm can be made upon request. The grids are packed with their coated side toward the center of the grid box