.

How to choose experimental freeze dryer

How to choose experimental freeze dryer
When purchasing freeze dryer equipment, there are often many problems. From the perspective of users, Beijing Songyuan Huaxing introduced some selection techniques for.
The freeze-drying machine freeze-drying is a method in which a water-containing substance is preliminarily frozen into a solid state, and the water therein is sublimated from a solid state into a gaseous state under vacuum to remove the water and store the substance. The articles obtained by the drying method have the original chemical and biological properties, are easy to be preserved for a long time, can be restored to the form before lyophilization after adding water, and can maintain their original biochemical characteristics, which is a high-quality drying. method. The main uses of modern freeze-drying technology are: freeze-drying storage of in vitro biological tissues; freeze-drying preservation of live bacteria; lyophilization of Chinese herbal medicines, western medicines, biological drugs and blood products; freezing of convenience foods, health foods, functional foods Dry storage and transportation; lyophilization preparation of nano ceramic materials and various metal micropowder materials. Therefore, freeze-drying technology has been widely used in the fields of chemicals, food, materials, medicine, and biological products. Vacuum freeze dryer (referred to as freeze dryer) is a device for realizing freeze-drying technology. It is a complex structure machine involving refrigeration, vacuum, thermal, mechanical, fluid, electrical control and pressure vessels. Know how.
Classification of experimental series freeze dryers:
The performance index of the experimental series freeze dryer is 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-frozen and dried. The process does not require manual operation. This type of freeze dryer has a complicated manufacturing process and high manufacturing cost, but 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 the drying of the bottled material of Xilin. When lyophilizing, prepare the material in the vial as needed, float the cap and freeze-dry it. After drying, operate the capping mechanism to compress the cap. 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.
Several parameters that should be paid attention to when purchasing a freeze dryer:
1, freeze-dried area
The number in the lyophilizer model represents the lyophilization area of ??the lyophilizer of this model. For example, the lyophilized area of ??the FD-1A-50 lyophilizer is 0.12 m2. The user should calculate the lyophilizer to be used according to his own needs. For example, for each batch of products that require lyophilization of 1.2 kg (liter) of liquid, and loading the material with a material tray, each loaded with 10 mm thick, the load area of ??the lyophilized layer can be calculated:
A (area, m2) = V (volume, m3) / H (height, m) = 0.0012 m3 / 0.01 m = 0.12 m2
A lyophilizer with a laminar load area of ??0.12 m2 is required.

If you have the needs of freeze dryers, freeze dryers, etc., you need to know the quotation, Please go to to find the or : Contact us, we will contact you in the first time.



在线联系供应商

至: Beijing Songyuan Huaxing Technology Development Co., Ltd.
Your E-mail:
消息正文:


Send to other suppliers

Other supplier products

LGJ-20F Standard Type Experimental Freeze Dryer
LGJ-20F Standard Type Experimental Freeze Dryer   ThisTechnical parameters   freeze drying area:0.3㎡   tray dimensions:395×265mm   tray numbers:3pcs   shelf dimensions:400×270mm ...
Processing principle of freeze dryer
Processing principle of freeze dryer Processing principle of freeze dryer technology, referred to as lyophilization, water vapour sublimation in a vacuum environment, low temperature...
LGJ-50F Standard Type Experimental Freeze Dryer
LGJ-50F Standard Type Experimental Freeze Dryer Suitable for freeze drying of bulk (liquid, pasty, solid) conventional materials.   LGJ-50F Standard Type Experimental Freeze Dryer Packing list ...
LGJ-12S Multi Manifold Top Press Type Experimental Freeze Dryer
LGJ-12S Multi Manifold Top Press Type Experimental Freeze Dryer  Technical parameters:   freeze drying area:0.08㎡   tray dia.:Ф180mm   tray numbers:3pcs   tray spacing:70mm   flask capacity & q'ty:1...
Experimental Vacuum Freeze Dryer
Experimental Vacuum Freeze Dryer The uses a physical principle to freeze the moisture in the compressed air below the dew point to precipitate it out of the air. Limited by the fr...
供应产品

Same products

THREE PHASE FRACTIONAL HORSEPOWER PREMIUM EFFICIENCY MOTOR
THREE PHASE FRACTIONAL HORSEPOWER PREMIUM EFFICIENCY MOTOR 卖方: Waylead Motor Features:HP: 1/4HP-2HPFrame: 48-56Rolled steel frameNEMA design BService factor. 1.15Insulation C...
Square Transparent Acrylic Cream Jar A22
Square Transparent Acrylic Cream Jar A22 卖方: Shaoxing Tyrell Packaging TL-A22Quartet 50g 23mm 32.64mm 10g 34.92mm 44.32mm 15g 37.3mm 45mm 20g 39.2mm 54mm 30g 42mm 60mm ...
RAYON EMBROIDERY THREAD
RAYON EMBROIDERY THREAD 卖方: KENKING Industrial Rayon embroidery thread is suitable for high speed embroidery machines,also use for high quality ...
YG型立式防爆管道离心泵
YG型立式防爆管道离心泵 卖方: 771442 YG型立式管道离心油泵是本单位科技人员联合国内水泵专家选用国内优秀水力模型,采用IS离心泵之性能参数,在一般立式泵的基础上进行巧妙组合设计而成,同时根据使用温度、介质等不同在ISG型基础上派生出...
CUSTOMED EMPTY GELATIN CAPSULE FOR MEDICINE
CUSTOMED EMPTY GELATIN CAPSULE FOR MEDICINE 卖方: Tianlong Capsule (Materials / gelatin, our company only uses bovine bone gelatin.Function / rapid dissolution,...