Handle weights with care.

2. Before use, wipe the scales clean of any dust with a soft brush or cloth.

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 handle weights with bare hands. Use a tool to remove weights when in use.

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

7. Each set of weights must not be mixed with other weights.

8. Avoid using thick acids, alkalis, and greases during use.

9. After use, clean the weights with alcohol and let them air dry naturally before storing 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 are issues with the weight performance, it should be immediately sent to a testing facility for inspection.