A. General
Information
The Labconco FreeZone 4.5L
Benchtop Freeze Dry system is a compact laboratory lyophilizer with ice holding
capacity for light to moderate sample loads. It has a permanently-installed
10-port drying chamber and a compact benchtop design. A vacuum pump and
sample containers, such as flasks, are the only additional components
necessary for a complete system.
The FreeZone 4.5L system
removes water (or other solvents) from a frozen product by a process called
sublimation. Sublimation occurs when a frozen liquid is converted
directly into a gaseous state without the intermediate formation of a liquid
phase. To achieve sublimation, samples must be
pre-frozen before being placed on the instrument. Once on the
instrument, the rate of sublimation depends on the difference in the vapor
pressure of the sample compared to that of the ice collector.
