Regular calibration and verification: In accordance with national/international standards or the requirements of the manufacturer, qualified institutions conduct regular calibration or verification to confirm that the equipment accuracy meets the requirements and retain traceable records.

Interim verification: Between two formal calibrations, verification is conducted using reference materials, reference standards or stability samples to monitor the stability of the equipment status.

Standardized operation and maintenance: Develop and strictly enforce standard operating procedures, and provide training and certification for operators. Implement a preventive maintenance plan to keep the equipment in good condition.

Environmental control: Ensure that the equipment operates under the required environment (temperature and humidity, cleanliness, vibration, etc.).

Record Management: Detailed records of calibration, verification, maintenance, usage conditions and any deviation handling are kept to ensure traceability.