Dewar bottles are available in a variety of shapes: cylindrical dewar bottles, saucer-shaped dewar bottles, screw-top dewar bottles, flange-jointed dewar bottles, and so on. In terms of material, there are also glass Dewar bottles and stainless steel Dewar bottles. The following describes its advantages.

I. Cylindrical Dewar bottles:

Various shapes are designed with aluminum shells to meet the different needs of laboratories.

Suitable for storing liquid nitrogen, dry ice and other cryogenic products, but also in the laboratory frozen storage of a small number of samples, matching cap to prevent evaporation.

II.Flat Bottom Dewar Bottle:

The bottom is completely flat, especially suitable for electromagnetic mixer.

Suitable for storing cryogenic products such as liquid nitrogen, dry ice, etc., and can also be used to freeze and store a small amount of samples in the laboratory, with a matching lid to prevent evaporation.

Models with side viewing windows are available.

C. Shallow sump shaped Dewar’s bottles:

Large opening, suitable for electromagnetic mixer, can be used as a bath, suitable for reaction bottles to control the temperature, especially for JULABOFT-402, FT-902 digital input chiller, low temperature or ultra-low-temperature biochemical reactions, for -200 ~ +200 ℃ media storage.

Glass Dewar bottles have the advantages of simple structure, good heat preservation, good transparency and good sealing performance than metal Dewar bottles.

Glass Dewar bottles.

Overcome the traditional products in the use of fragile and vulnerable shortcomings, the use of high-grade raw materials, finished products after the external fixed metal protective sleeve for protection, greatly extending the service life of the product, greatly improving the ability to withstand external damage. Compared with similar products, it has the advantages of safety and durability. Special size can be customized according to user requirements, but the glass is brittle material, poor strength, fragile, not suitable for manufacturing diameter greater than 250mm, length 700mm Dewar’s bottle. The volume of spherical Dewar bottles shall not exceed 10,000ml.

The main technical data are as follows:

Vacuum degree before sealing ():10.6.

Vacuum baking temperature: 400℃.

Vacuum period(hour):8.

Use temperature range:-270~200℃.

V. Stainless steel dewars.

Suitable for storing and transporting liquid nitrogen, dry ice and other cryogenic products, matching lid to prevent evaporation, zhuanli structure design, good heat preservation performance, sturdy and unbreakable.

Options: with operating handle; DSS series without operating handle, anti-evaporation heat insulation cover is optional.

All products should consider its inner volume, inner diameter (inner height), liquid nitrogen storage period and evaporation rate.