In the use of electronic balances, when static electricity occurs, such as ceramics, plastics, glass, etc., with electrostatic charges, the magnetic field between the sample and the electronic balance will produce a gram-level error of the weighing result, so the impact of static electricity will increase when the milligram weighing or smaller weighing is carried out.

Here are some tips to keep the electronic analytical balance away from static interference and achieve accurate weighing:

1. The most direct way to avoid the generation of static electricity is to increase the humidity, and the ambient humidity is about 70%.

2, if the item to be weighed has static electricity, eliminate it before weighing.

3, before the user uses the balance, the hand first touches the wall to remove the static electricity on the operator.

4, in addition to maintaining the humidity in the electronic balance use environment, but also to connect its ground wire well, which can effectively avoid the generation of static electricity.

5, in order to quickly eliminate static electricity, metal sample tank can be used. If a weighing container cannot be selected, a special weighing chamber can be used, which can both eliminate static electricity and reduce the impact of air flow.

6. The electrostatic eliminator is used to remove static electricity to ensure that the weighed items are insulated.

Some laboratory electronic balances use electromagnetic force balance principle to weigh, although the measurement accuracy and sensitivity are better than traditional mechanical precision balance, but it is affected by external temperature and electromagnetic environment, so pay more attention in use to improve its weighing accuracy.