Laboratory balances

The balance is a laboratory instrument that measures the mass of a body or chemical substance, using the force of gravity acting on the body as a means of comparison. The word comes from the Latin terms:

  • bis which means two.
  • linx which means dish.

It should be taken into account that weight is the force that the gravitational field exerts on the mass of a body, such force being the product of the mass by the local acceleration of gravity. [F = m x g]. The local term is included to emphasize that the acceleration depends on factors such as geographical latitude, height above sea level and land density, at the place where the measurement is made.

The balance is used to measure the mass of a body or substance or also their weight, since between mass and weight there is a well defined relationship. In the laboratory, the balance is used to carry out quality control activities – with devices such as pipettes -, to prepare mixtures of components in predefined proportions and to determine specific densities or weights.

The balances differ from each other by the design, the principles used and the metrology criteria they use. At present it could be considered that there are two large groups: the mechanical scales and the electronic scales.

 
 
 
 
 
 
 
 
 
 
 
 

Types of balances to work with precision in the laboratory.

 
 
 
 
 
 

Analytical balances

Usually, these analytical balances are manufactured inside a transparent box provided with doors to isolate it from certain factors that may affect its operation. Therefore, due to the need for extreme precision of the measurements carried out, these must have specific rooms for their manipulation, with controlled environmental conditions, as well as observed with the conditions of the electrical network to supply voltage within the tolerance limits specified in the manual of each model.

It works by comparing masses of known weight with the mass of a substance of unknown weight. It is built based on a bar or symmetrical lever that is supported by a blade-like support at a central point called fulcrum. At its ends there are stirrups or bushings that are also supported by blades that allow them to swing smoothly.

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Electronic scales

A precision electronic balance is an instrument that is used to weigh through the intervention of gravity in order to determine a mass in question. Use a plate where the object to be measured is placed. Then the load cell is the one that allows to measure the weight exerted by the mass to be determined. Precision balances are used in laboratories and are practically essential for all tasks carried out there.

The resolution of these balances varies according to the model, the same happens with the working range. They generally have a resolution that can reach 0.01 g of resolution.

 
 
 
 

Using An Analytical Balance

It is a laboratory instrument used to measure small masses. The saucers with which it is measured are located in a transparent box, which has doors. This is in order that dust and air do not affect the measurements. It is used mainly in laboratories.

Por lo tanto, para su uso correcto, se utilizan en una tabla de nivel rígida, con una entrada única, con una cantidad mínima de luz solar. Pueden ser digitales o mecánicos. Ofrece mediciones muy precisas, ya que usan un sistema electrónico que funciona con centésimas. Su uso es necesario en laboratorios, por ejemplo, en el caso de los ingredientes de pesaje para la fabricación de sustancias o medicamentos. Para que su operación sea correcta, deben calibrarse antes de su uso. Su rango de trabajo es unos pocos gramos y con una resolución de hasta 0.1 μg.

KALSTEIN BALANCES

In Kalstein you can find the ideal laboratory balance

At Kalstein we have an excellent range of laboratory balances. That is why we invite you to take a look at the “Products” menu.

Spring balance

Its operation is based on a mechanical property of the springs, which is that the force exerted by a spring is proportional to the spring’s elasticity constant [k] multiplied by its elongation [x] [F = -kx].

Sliding weight balance

It has two known masses that can be moved on scales – one with a macro graduation and the other with a micro graduation -; when placing a substance of unknown mass on the tray, its weight is determined...

Analytical balance

It works by comparing masses of known weight with the mass of a substance of unknown weight. It is built based on a bar or symmetrical lever that is supported by a blade-like support at a central point called fulcrum...

Upper plate balance

This type of balance has a loading plate placed on the top, which is supported by a column that is held vertically by two pairs of guides that have flexible couplings.

Our best-selling balance 🏆

The model of this analytical balance has an electromagnetic sensor. In addition, it also has an LCD backlight display that makes viewing values ​​much easier and clearer. In addition, it is operator friendly with direct weight and directly reads the weighing results. This model is very smart, making it the right outfit for you. One of its most important characteristics is that it increases and returns to zero within the entire weighing range. Also, it has an overhead screen.

Another important feature that you should know about this analytical balance is that it has a multiple choice mode that includes count, weight percent, and density weight. Also, it comes with an RS-232C interface, which is easy to connect with a printer, computer, and other output device. The frame size of this model is 325mm x 205mm x 305mm and its weight is 8kg. There are two versions of this analytical equilibrium model. First, there is the YR01766 with a capacity of 120g and then there is the YR01767 with a capacity of 220g

 
 
KALSTEIN UPDATED

What is your ideal laboratory balance?

There are countless models, so it is normal that you do not know which laboratory balance to buy to suit your needs. At Kalstein, we evaluate them to find what you are looking for.
 
 

Analytical and electronic balances - Kalstein

Balances are instruments whose purpose is to measure masses of bodies in greater or lesser quantity. They are characterized...

 
 
 
 

How to use an analytical balance correctly?

The balance is a laboratory instrument that measures the mass of a body or chemical substance, using the force of...

Types of balances in the laboratory - Kalstein

The most common types of laboratory balances and scales are ultramicrobalances, microbalances, semi-microbalances...

 
 
 
 

Care and correct use of laboratory balances

In the laboratory, the balance is used to perform quality control activities and to determine specific densities or weights. Therefore, it is necessary to have optimal conditions from the environmental and structural point of view. As well as to provide the correct maintenance of this equipment, in order to ensure correct weighing.

 
 

Balances On Offer

 
 
 
 

Analytical balance

The model of this analytical balance has an electromagnetic sensor. In addition, it also has an LCD backlight display ...

Scale model - YR01760

The body is made of PC alloy materials, hard and foolish. Pan is made of high quality stainless steel with SUS304 ...

Scale Model - YR01926

This type 1 electronic scale model has a healthy-looking style. Its body is made of PC alloy materials ...

Scale model - YR01927

This type 1 electronic scale model has a healthy-looking style. Its body is made of PC alloy materials ...

Scale Model - YR01939 

The body is made of PC alloy material, stable and durable. The weighing pan is made of 304 stainless steel, the shape is simple ...

Scale model - YR01764

It has a healthy-looking style. Its body is made of PC alloy materials, hard and dumb. As for the skillet ...

Scale Model - YR01762 

The weighing pan is made of 304 stainless steel. Large LCD display, smooth backlight and easy to read. With counting and weighing mode ...

Scale Model - YR01761

Large screen LCD display, the backlight is soft and easy to read. Humanized design. Fast answer. With the characteristics of ...

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