Laboratory coolant: how to choose it and which one to buy

November 2, 2021

When it comes to laboratory instruments the list of alternatives goes up considerably. This is due to the fact that there is an impressive number of experiments to be carried out with particular functions and uses in both chemistry and physics.

Under this premise, we present the laboratory refrigerant , also known as the refrigerant tube, a tool used to condense gases. It is a cylinder-shaped object that transforms vapors into liquids through distillation.

But how do you know which refrigerant to buy? That is a good question. We know that there is difficulty when choosing good laboratory instruments and that is why we have decided to investigate here and there until we find basic notions of choice for refrigerant tubes.

What is a laboratory refrigerant?

In the world of physics there is a process known as condensation, which is the change from one state of matter to another. Specifically from gaseous to liquid by exposing a refrigerant. The coolant is usually water, although sometimes forced air is used.

However, saying it is easier than doing it. It’s not like you can take gases with your hands and put them in the heat. There is an instrument that helps in the condensation of state changes and that is the laboratory refrigerant, also known as a refrigerant tube.

The objective of laboratory refrigerants is to provide the conditions for the change of state of the vapors. For that it has two behaviors. An internal cylinder where the gases circulate, and another thicker external cylinder through which the refrigerant liquid circulates.

What does the lab coolant look like?

The laboratory refrigerant is a tube, similar to the test one, but made up of two cylinders. One internal and one external. Both are provided with ground glass joints, which are used in laboratories to connect various devices.

The laboratory refrigerant has a connection in the upper part where a hose is connected and allows the liquid to escape after the change of state of matter. Both are forged of glass and allow exposure to high temperatures. While the hoses are made of plastic and frosted glass flasks.

Uses of laboratory refrigerants

To understand the use of laboratory refrigerants , you first have to get into context. A distillation flask is a long-necked, spherical-bodied instrument used to uniformly heat a substance from which a vapor is emitted.

Said vapor is captured by the internal cylinder of the utensil to convert it into a liquid drip using refrigerants. Substances that act as cooling agents and with special properties, such as temperature and pressure. Being water the most common.

One application of these instruments is for reflux techniques , experimental methods where vapors containing liquid solvents are heated. These are exposed to high temperatures in the distillation flask and then cooled with refrigerant to drip liquid.

Types of laboratory refrigerants

When you evaluate the composition and uses of laboratory refrigerants, you realize that there is not just one model, but several. But how are they different? Here we will tell you the basic notions that characterize each type of instrument.

  • Graham refrigerants , It is a tube with two cylinders: an internal one in a spiral shape and another external straight and thick. While at the ends it is sealed by glass stoppers.
  • Air coolers . It is a condenser unit where heat turns into liquid when cooled by the outside air.
  • Liebig coolant . An extremely easy to use and understand refrigerant tube, as the inner cylinder is straight and has a top connection for the distillation flask.
  • Vigreux coolant . It is a modified version of the air cooler and is used for fractional distillation, which is the successive separation of liquids from a mixture taking advantage of the boiling difference.
  • Dimroth coolant . This instrument is similar to the spiral unit but differs from the Graham because it has a double oscillating layer for cooling. It also has double inlet and outlet, optimizing liquid drip production.

How to choose laboratory refrigerants?

Choosing a laboratory refrigerant is not an easy task. Considering the number of types that exist and the uses that can be given in terms of condensation treatment, the choice is a significant problem.

However, all is not lost. With the notions to choose laboratory refrigerants, we will facilitate the process of choosing tools to condense the vapors that arise from a distillation flask.

Also keep in mind that they are instruments a bit expensive, so you can always ask for the best personal loans .

Type of soda

As we mentioned before, there are different types of refrigerant tubes. Each one with its particularity and design. When buying one of these units for your laboratory, you must take into account the model. If you want an air one, a straight cylinder condenser or a spiral cylinder condenser.

Refrigerant size

In turn, laboratory refrigerants are divided according to sizes. For example: 200mm, 400mm and up to 500mm capacitors. The choice, as with the type, depends on the needs of use. Or, if you want to have the complete collection, it is advisable to buy one unit in each presentation.

Refrigerant Materials

Finally we have the materials that determine the quality of the instrument. These should be ground glass to fit with other glassware, such as the distillation flask. If you buy a plastic or other material coolant, it may not connect and may not work.

Which refrigerant to buy?

Condenser tubes must be purchased at specialized stores for laboratory instruments. They are usually in physical and digital mode, so it is up to you to choose the one that best suits your needs.

On the other hand, it is difficult to say which refrigerant unit to buy considering that all of them are necessary at some point. However, you can try a JIANFEI LIANG brand Graham coolant .

These are heat and thermal shock resistant backflow tubes, they are made of borosilicate glass and come in various sizes such as: 200mm and 500mm. They are clarified and clear to identify the internal drip.

Dr. Loony Davis5
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Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

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