Product Description Vacuum freeze-drying is one of the most gentle drying methods available. It operates on the principle of sublimation — the physical phenomenon in which a solid phase transitions directly into a gas phase. The material to be dried is placed in a vacuum drying chamber, and the water vapor produced is condensed by a cold trap to form ice, effectively eliminating moisture. A vacuum pump evacuates the air from the drying chamber, excluding water vapor. The
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