Simple devices for the preparation of specimens for scanning and transmission electron microscopy.

A simple and inexpensive equipment especially for the dehydration of cells grown on coverslips in a continuous linear gradient is described. On this way it is possible to handle many objects simultaneously. The coverslips, even irregularly formed, are fixed vertically in simple silicon-rubber-holders. The device including a described special holder can also be used for thorough rinsing of EM-grids during the immunocytochemical labelling.