Specimen holders for simultaneous critical point drying of multiple biological specimens.

Specimen holders were developed for simultaneous critical point drying of multiple specimens of monolayer cell cultures grown on Leighton tube glass cover slips or for specimens of cells collected on silver or cellulose membrane filters. The use of these multiple specimen holders makes it possible to process several specimens in parallel and thus significantly reduce the time required for handling large numbers of samples and also eliminate the possible variations that occur in processing individual samples one at a time in series.