高真空低溫冷凍乾燥機 /
Freeze Dryers

 

產品類型 / Product type:

 

冷凍乾燥機 / Freeze Dryers

 

產品應用 / Application:

 

相關網址 / Link:

http://www.quorumtech.com/products/freeze-dryer/k750x-peltier-cooled-rotary-pumped-freeze-dryer-for-sem-samples.html

 

規格說明 / Specification:

 

The K750X freeze drying specimen preparation reduces the distortion and shrinkage effects that occur when a wet specimen dries by normal evaporation. Distortion is due to the forces of surface tension that occur when going from a liquid to a vapour phase, such as from water to water vapour - the normal situation with biological specimens.

The freeze drying method 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.