Handle the weights with care.

2. Before use, clean the surface dust of the weight with a soft brush or cloth.

3. Inspect the weight inside the box before and after use to prevent loss.

4. Weights should be stored properly and not placed in damp, dusty environments.

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 and let them air dry naturally before storing them in their original packaging box for future use.

10. Weights should be calibrated regularly according to 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.