Bench Top Mini Vacuum Freeze Dryer Machine for Laboratory

The performance index of the  Laboratory series freeze dryer is bench-top type, small volume, light weight, multi-function, stable performance, high accuracy of the test system, preferably a multi-purpose machine, which can adapt to the freeze-drying experiment of various materials. The main division methods of the experimental series of freeze dryers are:
1, from the structure
l Bell-type freeze-drying machine: the freeze-drying chamber and the cold trap are separate upper and lower structures, and the freeze-drying chamber has no pre-freezing function. This type of lyophilizer requires manual operation when it is transferred to the drying process after the material has been pre-frozen. Most of the experimental freeze dryers are bell-type, which has a simple structure and low cost. Most of the freeze-drying chambers use a transparent plexiglass cover to facilitate the observation of the lyophilization of the material.
l In-situ freeze-drying machine: the freeze-drying chamber and the cold trap are two independent chambers. The shelf in the freeze-drying chamber has a cooling function. After the material is placed in the freeze-drying chamber, the material is pre-freezing and drying without manual operating. This type of freeze dryer has a complicated manufacturing process and high manufacturing cost. However, the in-situ freeze dryer is the development direction of the freeze dryer, and is an ideal choice for lyophilization process, especially suitable for medicine, biological products and other special products. Freeze dried.
a, common type b, multi-manifold type c, gland type
2, from the functional points
Ordinary shelf type: The material is bulk in the material tray and is suitable for lyophilization of food, Chinese herbal medicine and powder materials.
With gland type: suitable for drying of Xilin bottled materials. When lyophilizing, prepare the materials in the vials as needed, float the caps and freeze-dry them. After drying, operate the gland mechanism to compact the caps. It can avoid secondary pollution, re-adsorb moisture, and is easy to store for a long time.
Multi-manifold type: The flask is attached to the outside of the drying chamber, and the material frozen on the inner wall of the bottle is dried. At this time, the flask is connected as a container to the manifold outside the drying box, and the material in the flask is heated at room temperature, and the mixture is heated. The tube switch device can be removed or loaded at any time as needed without stopping the machine.
With pre-freezing function type: material pre-freezing process, cold trap as pre-freezing chamber pre-freezing material, in the drying process, the cold trap is a water trap, capturing the moisture overflowing the material. The lyophilizer with pre-freezing function, the pre-freezing and drying of the materials in the freeze-drying process are all completed on the lyophilizer, and the lyophilizer has high use efficiency, which saves the cost of the low-temperature refrigerator.