Porcelain capsule, what is it, characteristics and price?

November 2, 2021

The porcelain capsule is a laboratory material in the form of a container in which substances can be melted or subjected to high temperatures. In ancient times, porcelain capsules have been used to pour substances and other types of solids in order to melt substances and withstand the extreme temperatures that are needed to achieve the desired results.

These, by common sense, do not have to melt, so the chosen material is not surprising that it is porcelain, which is quite resistant. However, there are known versions of clay, but they cannot be classified in the same way as we know today and are used as instruments in the chemical laboratory.

They are available in a variety of shapes and sizes , each adapting to what is required to be deposited inside. They are composed of materials that withstand extreme temperatures, or that do not modify the substances themselves. These can be large vessels, embedded liners for industrial foundry, and many others. What really matters is that they meet the objective, but in the laboratory they all follow the same principle, which is to serve as a container or capsule.

Generally, the charge applied to a porcelain capsule is a heating fuel known as coke, although oil, gas or electricity can also be applied. Melting is commonly used when small batches of low melting alloy are required.

Next, we will break down in detail everything that the porcelain capsule hides from us. A well-known laboratory tool, along with the crucible , for being quite sturdy. This cannot fail in any experiment, so we have decided to talk in detail about its characteristics and uses. Join us!

What is a porcelain capsule?

A porcelain capsule is a container used since ancient times as a capsule for melting or testing other metals. Modern versions are often smaller compared to the past, and serve as laboratory utensils for testing high-temperature chemical reactions. Or, less common but the same use, in industries, where the size is usually larger, to melt and calcine metals or minerals.

This type of container comes in the form of a hemispherical container, generally with a white color so that it is visible when it is being used, and it is provided with a spout on one of its sides for better handling. As has been mentioned, that they are made of porcelain responds to a single purpose and that is that when they are subjected to excess evaporation of a substance, or solvent, a sample of it can be taken and thus begin to analyze and compare with other compositions. .

In simple terms, when we talk about evaporation of a solvent we refer to that process in which it is intended to eliminate part of the solution, which, because it should be, should be easily evaporated. This causes the solution to have a higher solute concentration and is considered concentrated. This is a common chemical process that is repeated in many tests where the porcelain capsule is the main utensil thanks to its resistance to high temperatures.

Description of the porcelain capsule

As mentioned above, the porcelain capsule is usually shaped like a hemispherical container that is generally intended to be 10cm in diameter, the bottom of which has to be round so that solutions can be easily poured. The materials with which they are made include potassium silicate, which has a high acidity and allows it to resist extreme evaporation.

One of the essential characteristics of the porcelain capsule is that the material of which it is composed has to be tested before, since if it does not comply with the principles of resistance, it could not only damage the solution under test, but also melt and create a laboratory accident. Therefore, if you are going to buy one of these laboratory instruments for your collection, you should read the indications and check that potassium silicate is the material for production.

In itself, they can be found in various sizes, from small to large, with diameters that can even reach 34 cm. They also have capacities measured in ml ranging from 10 and 100 respectively. Although it is common for the bottom to be round, there are some models where it is usually flat.

Porcelain Capsule Features

Compiling the information that we have been providing, for a utensil to be considered a porcelain capsule, right off the bat it has to be made of the material that it bears by name, porcelain. Its preparation must be based on potassium silicate with high acidity, which resists high temperature and, although it does not need to be something fixed, it must be bright white. That it is this color is essential because it helps to see how the solution is transforming and to get a better view of the process.

Uses of the porcelain capsule

The main use of any porcelain capsule is that it is capable of separating the mixtures through a gradual process of evaporation. These are subjected to heat, in which some substances are deposited and then thanks to the extreme temperatures they transform or change, depending on the type of substance that is being tested within the laboratory instrument.

It’s simple, any small batch of solutions that want to be treated at a high temperature point is when the porcelain capsule should be used. In the laboratory they are used to contain chemical compounds when heated to extremely high temperatures.

For completely accurate results, the porcelain capsule must be handled with clean tweezers, as fingerprints can add heavy mass. This type of utensil is known as hygroscopic , since they absorb a little moisture in the air. For this reason, the porcelain lid is also pre-heated. At least two cooks, cooldowns, and passages that result in exactly the same mass are needed to confirm constant mass.

How to use the porcelain capsule?

Before putting the porcelain capsule into practice, it is necessary for scientists. Or students who are doing practices, follow a specific procedure. Both to obtain the expected results, and to have a control in the laboratory. The first thing to do is place the porcelain capsule on an asbestos grid.

Second, is that this type of grid is made of a thin mesh , or in that case, of thin metal cloth. This is common in all laboratories, so that they are known in the subject will know how to spread the heat in a uniform way. Under the grid, the lighter is located below. The lighter flame must be heated first before putting the porcelain capsule, which will result in the process occurring and evaporation of the desired solvent occurs.

Once the test is finished, and the solvency or concentration of the solution has been achieved, the cleaning procedures established by the laboratory are used, since once it is used again, they are completely clean.

Importance of the porcelain capsule

Perhaps the importance of the porcelain capsule has been clear throughout the article, but it never hurts to highlight the advantages and virtues of a laboratory tool. First, the obvious thing is that it is perfect to subject it to processes where the temperature is in high quantities. Which will not cause it to melt and not spoil the solvent that is deposited inside. It is also considered waterproof for all types of liquids, whether they are products or chemicals.

If handled with care, it is sure not to break, let alone break, even when placed on the rack. This is an advantage, since the concentration of a solution is very common in laboratory techniques, whether it is melting, heating or burning chemicals.

Porcelain crucible and capsule

The crucible is another laboratory material from which containers are made and is very similar to porcelain capsules. These are important for aluminum smelting, in which refractory ceramic materials and components suitable for use in smelting operations, melting and function of the above-named material are poured. They are also used in the manufacture of ceramics through the refraction of molten glass during firing, calcination or fusion in a furnace.

Crucibles and their covers are generally made of strong materials, such as porcelain, aluminum, or an inert metal. One of the first uses of platinum in history was to make crucibles. Ceramics, such as aluminum, and especially magnesia, which are materials that withstand high temperatures, have also been used to design crucibles. Caps are typically loose and allow gases to escape during heating of a chemical solution inside.

The crucibles can come with high and low shapes with different diameters to the same as the porcelain dish. But for laboratories they are rather small reaching about 10-15 ml in view of performing a chemical analysis.

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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