Handle weights with care.

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

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

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

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

6. Before calibrating the balance, the weights must be maintained at a constant temperature to meet 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 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, the weight should be sent to a testing facility for inspection immediately.