Equipment: Quorum Technologies Critical Point Drier
Critical point drying is a standard method for preparing SEM samples. Specimens are dehydrated in a solvent such as ethanol, then placed in the CPD where the solvent is exchanged with liquid carbon dioxide. Raising the temperature of the sealed "bomb" raises the liquid carbon dioxide past the critical point, where the density of the liquid phase is equal to that of the vapor phase. This process avoids the surface tension effects of normal drying and so preserves the natural structure of the sample.
$30.00 per hour for UT Austin users
$54.00 per hour for external university users
$65.00 per hour for corporate users
Facility User Education
To become a user of this instrument please sign up for the next available NT201 facility user education class. External/Corporate users must contact CNM to setup an account before attending facility user education classes.
Dr. Damon Smith