Freeze drying significantly reduces the distortion and shrinkage effects that occur when a wet specimen dries by normal evaporation. Freeze drying overcomes this problem by careful sublimation of frozen specimens under vacuum – a process that avoids the liquid phase and thereby reduces distortion effects. The rate of sublimation is a function of temperature and vacuum with typical drying times being several hours or longer.
The K750X Freeze Dryer operates at rotary pump vacuum (typically down to 1 x 10-2 mbar). using a ‘Peltier thermoelectric stage’. The instrument has the following specifications:
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