Used in various practices and research in laboratories, analytical balances or scales are a type of measuring chemical substances that have a very small mass. The accuracy of mass measurement presented by this type of scale is generally in the sub-milligram range. The type of object itself can be solid or liquid.
In the practice of measuring the mass of very small objects, you need to know some of the main points of using analytical balances. These points include the concept, how to work, and how to use analytical scales that have been adjusted according to the rules.
Know the Concept and How Analytical Scales Work
Not only measuring the mass of a small substance in the sub-milligram range, but analytical balances also have high accuracy. In fact, the accuracy presented can reach 0.0001 grams. In addition, these laboratory scales can also be used to make the mass percentage of a substance against other substances that are being tested.
There are two types of analytical balances, namely analog and digital analytical scales. However, these types of digital analytical scales are more widely used today. One of the main reasons is the process of weighing substances and mass reading which is much easier and faster than analog types.
When weighing the mass of a substance, an analytical balance will measure the pressure required in the mass calculation process. Through this process, the scale is able to display the actual mass of the substance required for recording laboratory tests.
The way analytical balances work also involves the electromagnetic principle. This scale will produce a repulsive force on the sample of the substance being measured so that it can display the mass measurement results under conditions of balanced or equal force.
How to Use Analytical Scales
To get precise and accurate sample mass calculation results, you need to know how to use analytical balances correctly, and according to the rules. Consider the step-by-step procedure for using the following analytical balance:
1. Make sure the scale is in the correct position before starting to use it.
2. Set the water pass according to the recommended instructions for use.
3. Turn on the scale by pressing the "Power" button.
4. Wait for the scale to stabilize, indicated by the zero display on the monitor.
5. Open the lid of the scale glass.
6. Place the substance to be weighed onto the dish.
7. Wait for the process until the scale shows a stable number.
8. After the balance condition is deemed stable and the numbers are no longer changing, record the calculated mass of the substance being weighed.
9. Remove the substance from the top of the balance plate.
10. Turn off the scale, clean the plate using a special brush, and return to store the analytical balance in a safe, dry, and free from distractions.
Important Things To Look For When Using Analytical Scales
In addition to understanding how to use analytical scales properly and correctly, you also need to pay attention to a number of other important things in the use of this laboratory balance. Here are some of them:
- Make sure the balance is always calibrated or reset before weighing new substances or samples. The calibration process can be done externally with the pendulum or internally without involving additional components.
- Always use a base such as a container, glass, or paper when placing the sample on the scale plate.
- Analytical scales must always be in a room with a stable temperature so that changes in temperature will not affect the calculation of the mass of the object.
This is an explanation of the meaning, working principles, and how to use analytical scales. This information can also be used as a guide when you will use this type of scale in the laboratory.
To get a more precise and accurate measurement of the mass of a substance, make sure you use an analytical balance product from Mettler Toledo. Reliable quality and easy-to-use procedures for use make these scales suitable as a core tool in laboratory testing processes.