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Showing all 12 results

Construction and function of Dewar furnaces

The Dewar furnace is named after its inventor, the Scottish physicist Sir James Dewar. In 1890 he developed a laboratory vessel for the thermal isolation of liquids and substances. Due to the nature of the material, all heat transfer processes are restricted. For example, heat is not conducted through the glass vessel and heat radiation is prevented by the mirror coating.

Dewargef areas of application

Dewar flasks from our online range are suitable for a wide variety of applications. We will be happy to help you find the right laboratory vessel:

Storage of hot and ice-cold media

Whether dry ice, liquid nitrogen or hot l Dewar flasks from our portfolio can be used for substances with low and high temperatures.

Short-term storage of refrigerants

Liquid nitrogen and dry ice can be stored very well in the vessels and, in addition, can even be transported safely from A to B. It is important that the plugs are also used. It is important that the stoppers as well as the lid material can withstand the extremely cold temperatures.

Shock freezing

If you want to shock freeze biological samples and specimens, high quality Dewar flasks are also excellent.

Gas purification

Gas purification by condensation also plays an important role in everyday laboratory work. Use the appropriately designed labware and get professional advice from the MedSolut team of experts.

Conveying bright and cold liquids

The laboratory vessels with mirrored glass inlay are ideal for storing and transferring cold and hot liquids.

Reactivity testing

Dewar flasks are also ideal for chemical reactions where, for example, the heat flow must be kept as low as possible.

Features and versions

In our online catalogue you will find a large number of high-quality Dewar flasks in a wide variety of designs. Whether cylindrical or spherical, whether with a particularly wide base or in the shape of a bowl, we have the right Dewar or laboratory vessel for every requirement.

Materials

The inner segment of high quality Dewar vessels is usually made of borosilicate glass according to 3.3 DIN/ISO 3585. It is particularly resistant to acids and alkalis, it is impermeable to water and it has a transformation temperature of 525 C. The walls of Dewar furnaces and special tempering beakers are usually made of light aluminium or chromed stainless steel.

Both materials are non-conductive, have a low weight and are extremely robust. Dewar flasks with a glass jacket are also available, but these are much less durable than chrome or stainless steel. Nevertheless, glass as an inner and outer material offers the advantage that the reactions taking place inside can be easily observed.

Shape and size

We offer you solid Dewar flasks in cylindrical form, in bowl-shaped design or also in the spherical variant. In addition, you have the choice between different filling quantities and temperature resistances.

  • Spherical vessels are particularly easy to swivel so that the substances stored in them can be mixed evenly.
  • The cylindrical shape, on the other hand, is the classic among the Dewar or laboratory vessels and is suitable for a variety of specific laboratory applications.

Evaporation rate

Nitrogen and many other substances that evaporate must be stored in special containers. Make sure to use stoppers or covers that have an opening. In this way, you ensure that the secreted gases can escape. The evaporation rate provides information about the insulation performance of Dewar furnaces and refers to the type and intensity of the evaporation of liquid nitrogen. With our professional support, you can easily find the Dewar Furnace with the optimal evaporation rate for your work areas.

Silver plating types

Silver plating also plays a decisive role in Dewar furnaces. We distinguish between full silver plated, visible strip silver plated and non-silver plated or transparent vessels. Fully silver-plated laboratory furnaces have the lowest heat radiation losses. At the same time, you benefit from the longest service life of the material stored in the vessel. The wider the silver-plating strip, the lower the radiation losses. Consequently, unsilver-plated Dewar furnaces are the products with the highest heat loss.

Selection of Dewar furnaces on MedSolut.com

At MedSolut.com you can order first-class Dewar flasks in various designs, shapes and sizes. We are pleased to present a small selection here. If you have any questions about these and other products in our online range, our friendly team of experts will be happy to help you at any time.

Dewarfe in shell form

Dewar yeasts in shell form are mainly used in medical and laboratory technology. They are also in great demand in biotechnology and for the storage of substances. They are characterised by a safe stand, so that nothing can be spilled or spill. Contact us and we will be pleased to show you the suitable Dewar containers in the proven bowl shape.

Cylindrical Dewarfe

Cylindrical Dewar containers are the classics among the containers in this product category. Depending on the intended use, you will find cylindrical laboratory vessels in different sizes and with different accessories. Whether with a classic stopper or with a lid including a gasification opening, you always have the choice at MedSolut.com.

Dewar flasks with flat bottom

Similar to bowl-shaped laboratory vessels, Dewar vessels with a flat bottom are also particularly stable and therefore extremely reliable in handling. Whether for medium or large quantities, you will find exactly the flat-bottomed Dewar flasks that are best suited to your projects and work in our wide range of products. Do you need help with your selection? Please feel free to contact us.

Dewar flats

Spherical Dewar flasks are characterised by their great flexibility in handling. Liquids can be distributed particularly evenly in them, so that heat is distributed quickly.

Dewar flasks for magnetic stirrers

When carrying out tests and experiments in the laboratory, the individual steps must be precisely coordinated. Therefore, you can rely on our solid Dewar flasks for magnetic stirrers, which are equipped with a special attachment that can be exchanged as required. Whether in the pharmaceutical industry, in food technology, in the textile or materials industry, at MedSolut.com you can order first-class Dewarfs for magnetic stirrers in various sizes.

MedSolut.com your competent partner for laboratory supplies

Discover the perfect Dewarfe for your work and projects. If you are not yet sure which Dewar flask best suits your facility or institution, please feel free to contact us at any time. We will advise you in detail and individually.

We strive to make the ordering process as easy and smooth as possible. To place an order through MedSolut.com, please follow the steps below:

Place your desired product in the shopping cart and, if necessary, continue your search for suitable laboratory equipment and supplies. Then select the payment method that suits you so that you can complete your order in the next step. You decide where the items will be delivered. If you wish, you can also make an appointment with us to collect the items yourself.

Order Dewargef conveniently online

If you want to buy a Dewargef, MedSolut.com is the right place for you: Here you will receive a wide selection of quality products and the added service of expert advice. In addition, we are always there for you if you have technical questions about other products. Please feel free to call us(+49 30 209 657 900) or send us an e-mail to [email protected]