Critical point dryer
![original](/4595193/original-1517424714.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjQ1OTUxOTN9--80bbc85436e6263b98b39e6241534403333a7e87)
The Leica CPD300 critical point dryer is used to completely dry chemically fixed samples before SEM imaging. Critical point drying is an efficient method that preserves the surface structure of a specimen which would be damaged by evaporative drying due to the effect of surface tension when changing from the liquid to gaseous state.