Fruits Vegetables Vacuum Freeze Dryer Home Digital Control Lyophilizer

Freeze Dryer Introduction

Vacuum freeze drying is the removal of water or other solvents from the frozen samples. During the whole drying process, the sample is in liquid state and the temperature is generally lower than -10. The purpose of vacuum freeze drying is to restore the original characteristics of the sample after rehydration.

Because the drying process is carried out at low temperature, it can be used for some materials such as proteins, which are easy to be denatured at high temperature, and can ensure that the properties of other compounds will not change.

Most of the biological products, such as tissues, tissue extracts, bacteria, vaccines and serum, were changed into dry samples by vacuum freeze-drying. Vacuum freeze drying is the most gentle process to preserve the biochemical properties of sensitive tissue or other tissues. It is also the best method for drying inorganic materials, such as nano particles, because the surface area of particles is almost unchanged.

Technical performance

Condenser chamber temperature:≤-35℃ (without load)

Vacuum:under 15Pa(without load)

Working condition

working ambient temperature:10℃～30℃

relative humidity: ≤70%

supply voltage:single phase220V-230v

Horizontally, no conductive dust, explosive, corrosive gas and electromagnetic interference.

Delivery and storage condition: ambient temperature :-35℃～50℃

relative humidity: ≤93%

Storage environment should be well ventilated, non corrosive gas.

Freeze Dryer Features

(1) The machine adopts Tecumseh or Secop, rapid cooling

(2) LCD control system, easy to operation, and powerful function

(3) The dry room door is made of colorless transparent organic glass, and the whole process of freeze drying can be observed.

(4) The vacuum pump is connected by international standard KF quick connector.

(5) Stable performance, easy operation and low noise.

Freeze Dryer Application

HFD-4 vacuum freeze dryer is a kind of freeze-drying machine widely used in high performance laboratory. Freeze dry glass flask and serum bottle of solid and liquid samples. A variety of containers can be carried out on the same freeze dryer:

The pre freeze shelf surface temperature control

The samples of freeze-dried can be carried out in the user defined temperature

Dry in the limit temperature of freezing - user defined samples, high vacuum drying, and can remove capillary bound water molecules.

Normal information for vacuum freeze drying

Vacuum freeze-drying is one of the most gentle ways to dry. It is based on the sublimation principle, that is, the solid phase directly into the gas phase of this physical phenomenon. The freeze-dried material is placed in a vacuum drying chamber for drying, and the water vapor produced by the cold trap is condensed to form ice, so as to achieve the purpose of eliminating water vapor. Vacuum pump is used to discharge the air in the drying room, not including water vapor.

The baffle plate is provided with a heating device, and the heat is transferred to the material through the conduction function to provide the energy needed for sublimation. When the free water in the material is sublimated, the internal bound water can also be removed from the material at a very low vacuum. This drying process is considered to be the last stage of drying, analytical drying.

Freeze Dryer Parameter