Handle weights with care.

2. Before use, clean the scale surface with a soft brush or cloth to remove any dust.

3. Check the weights inside the box before and after use to prevent loss.

4. Weights should be properly stored and not placed in a damp and dusty environment.

5. Do not touch the weights with bare hands. Use a tool to remove the weights when using them.

6. Before calibrating the balance, the weights must be maintained at a constant temperature to achieve the laboratory's temperature conditions.

7. Sets of weights must not be mixed with other weights.

Avoid using thick acids, alkalis, and oils during use.

9. After use, clean the weights with alcohol, let them air dry naturally, and store them in the original packaging box for future use.

10. Weights should be calibrated regularly based on usage frequency, and calibration records should be kept.

11. If there is an issue with the weight performance, it should be immediately sent to a testing facility for inspection.