Analytical Balance, What is it and which one to buy?

November 2, 2021

The analytical balance is one of the most used and necessary elements in a laboratory , regardless of whether it is biology, physics or chemistry, and with it anyone is able to specify the exact weight of any material, substance or container. .

The foregoing is due to the fact that it has the ability to measure a weight even less than 0.1 milligrams , measurements that are commonly handled in laboratories, so that it is an effective , accurate and reliable tool . Although today it is highly evolved and has a comfortable structure to use, its creation was carried out in the year 1750 through the hands of a renowned Scottish chemist at that time: Joseph Black.

Since then, the analytical balance has been listed as one of the most accurate measurement items of all, helping to create accurate results in a large number of experiments and more. Today, science has been advancing, which is why various models are achieved that are adapted to the needs of each laboratory.

What is the analytical balance?

Although we have mentioned that this tool is usually used in any laboratory, it is commonly required in the area of ​​chemistry since it helps to measure not only solid substances, but also liquids and small masses, helping them to achieve be measured even if they weigh 0.01 milligrams, without missing the number.

Due to this, it has become a necessary and mandatory element within laboratories, since in addition to being reliable and precise, it has a useful life long enough to last a few years in operation, provided that the necessary maintenance is carried out by hand. from the experts.

However, it is important to bear in mind that the environment in which this element is used must be totally neutral since its precision could vary if there are factors such as breeze or dust moths.

Analytical Balance Features

Today, there are various types of elements that help to measure masses and solids, with less accuracy than the analytical balance. Despite this, it is not only in this that the instruments differ, but also in other specifications that make the analytical balance the best option of all.

The main characteristics of the analytical balance are the following:

  • It has a very characteristic design, especially because it has a comfortable structure, a perfect size and a box that seeks to protect the interior of the cabin in which the materials are placed despite being weighed. What you are looking for is that external factors do not interfere in the measurement of the sample.
  • As we have already mentioned, this analytical balance is special for small masses since it is capable of measuring up to 0.01 milligrams, weighing up to 200 grams without problems. However, over the years the precision has become even higher, so in some more modern cases, it is possible to measure up to 0.001 milligrams, which is commonly observed in chemistry laboratories.

On the other hand, it has other more specific specifications, such as the fact that it is always located on a surface that does not move , so that the balance does not slide or move in any way. This is because the sudden movement is capable of modifying the measurement result, altering it and generating erroneous results.

In the same way, it is important to bear in mind that the samples to be measured must be at the correct temperature since any change in this generates alterations in the results, including ambient temperatures.

How does the analytical balance work?

The function of the analytical balance is achieved thanks to the combination of various elements that work together and in parts, so that each one of them generates a reaction that will finally allow the precise measurement of the samples. To begin with, the most important components are a saucer, an electromagnet, and a photocell , which are grouped into what is defined as an electromagnetic system.

What happens is that the photocell seeks to detect the saucer and analyzes all the movements that it makes depending on the size that is placed on it. Once this takes effect, the electromagnet is the one that generates the balance so that the force exerted by the mass on the plate is analyzed.

Once these steps are completed immediately, the results are observed on the screen located in the front area of ​​the analytical balance structure.

What is the analytical balance for?

Thanks to the fact that the analytical balance is one of the most accurate balances created by man , it is one of the elements most used in laboratories to make exact measurements of materials that are impossible to measure with the naked eye. However, it is currently possible to measure up to 0.01 milligrams without problems with these scales, as long as these are the most current, since the common ones measure from 0.1 milligrams.

Based on this information, chemistry laboratories usually make constant use of the analytical balance, in order to know the real weight of the material they are measuring, thereby achieving optimal and precise results on a scale of + 98%.

What is the analytical balance used for?

As we have made clear throughout this article, analytical balances have a specific use, and that is to measure any type of matter, substance or specific mass, in order to know its real measurements and thereby create a accurate result in terms of experiments, especially chemistry.

Thanks to the advancement of science and the new models that have been emerging of these elements, it has been possible to generate results so precise that even those whose weight is less than 0.01 milligram , which is observed on a large scale in the area of ​​chemistry.

In addition, to this is added the fact that placing the samples on the pan that is in the center of the balance is a simple process that quickly produces a result on the electronic screen that is observed in large size in front of the structure. of the element. However, this is only achieved as long as the weight goes from 1 gram to 200 grams.

When the weight is less than the previous one, certain measures must be taken to help control the precision of the measurement, such as those mentioned above.

Types of analytical balances

Although all analytical balances work in a common and similar way, and give accurate results, they are usually divided in terms of their precision and mode of operation in terms of the technology they use.

The two main types of analytical balances that exist are the following:

Mechanical analytical balance

Mechanical analytical balances are those that are characterized by operating through various mechanical parts, as their name indicates, where they usually have not only one pan but two, where one of them works to place the plate. sample to measure and the other fulfills the function of making the counterweight. In addition, although they are accurate, they are not used to measure small masses since their results are not optimal, so they do not tend to be used in chemistry laboratories.

Electronic analytical balance

On the other hand, there is the electronic analytical balance, which tends to be the most used and popular of all. For this reason, it is the one commonly found in chemistry, physics and biology laboratories around the world, thanks to its optimal precision that offers accurate results, even less than 0.01 milligrams, regardless of whether the samples are liquid. or solid.

In general, these are the balances that have been replacing the previous ones, which is why they are the most widely acquired today in the world of laboratories. These are those that have the electromagnetic system and those that have only one pan, in which the sample to be measured is placed.

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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