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Electronic balances and density test assemblies are often used to measure solids density during material measurement and analysis in everyday laboratories. Before performing density measurements, we need to do the following preparations: 1.  Electronic balance . The accuracy of the electronic balance should be selected according to the specific requirements of the accuracy of the measured density data, and the capacity of the electronic balance should be selected according to the volume and weight of the sample to be tested. Before the test, it is necessary to preheat the prepared electronic balance for a long time and make necessary corrections to ensure the accuracy of the measurement data. 2. Test the components. It is necessary to select a suitable test component. For example, for some materials that are large in size and cannot be placed in the weighing chamber, the under-hook test component should be selected. 3. Sample to be tested. In order to measure the accuracy ...

In the process of analyzing the balance, we encounter various technical problems. Next, we will answer a few questions with relatively high questioning rates, and there are definitely some questions you want to ask! First, the laboratory must set up a special balance room to place one  0.001g precision balance ? Can it be placed directly on the separate platform in the inspection room? The environmental conditions of this level of balance are generally not more than 30 degrees Celsius, the humidity is not more than 85%, and the temperature difference during operation does not exceed 5 degrees Celsius; but whether it can be placed directly into the test room alone should also consider whether the room is There are corrosive gases, vibrations, and airflow effects that can be placed if they are all satisfied. Second, should the silicone in the electronic balance be replaced regularly and how often? Experts suggest that do not put desiccant in the balance, to control the tempe...

The balance is a commonly used instrument in the laboratory. A balance is an instrument that measures the quality of an object. It is made according to the principle of leverage. There is a small plate at each end of the lever, one end is placed with a weight, the other end is placed with an object to be weighed, and the center of the lever is equipped with a pointer. When the two ends are balanced, the masses (weight) of the two ends are equal. These reasons are already commonplace for those who have studied physics. Modern balances are becoming more sophisticated, more sensitive, and more diverse. We all know that there are ordinary balances,  analytical balance s, constant analytical balances, microanalytical balances, semi-micro analytical balances, and so on. It should be noted that the balance did not develop into what it is today. It still has a history of development! The invention of the balance is very early. It is rich in aquatic plants in the Nile Delta of Egypt. It ...