Vacuum freeze-drying method is a liquid → solid → gaseous process. In freeze-drying process, "liquid bridge" between the solution particles has been frozen into "solid bridge". The relative position of particles has been fixed and does not exist surface tension on gas-liquid interface between the two particles. With the continuous distillation of solvent, "solid bridge" continuously decrease, but the the relative position between two particles will not longer change until the "solid bridge" completely disappear.
SED-30DG Vacuum Freeze Drying Machine
Machine suitable for
food and vegetable drying
Cooling water Quantity
6000mm×2300mm×2600mm Final dimension based on design