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Standard Operating Procedure for Laboratory Equipment Calibration and Maintenance

Purpose

The purpose of this SOP is to define processes for calibration and maintenance of laboratory equipment used in clinical trial sample analysis, ensuring that results are accurate, reliable, and reproducible. Proper equipment management is critical for compliance with ICH GCP, GLP, FDA, EMA, CDSCO, and WHO requirements.

Scope

This SOP applies to all laboratory staff, QA personnel, equipment vendors, and service engineers involved in the calibration, preventive maintenance, repair, and verification of laboratory instruments used in clinical trials. It covers balances, pipettes, centrifuges, pH meters, refrigerators, freezers, LC-MS/MS systems, incubators, and other validated instruments.

Responsibilities

• Laboratory Manager: Ensures calibration and maintenance schedules are implemented and followed.
• Analysts/Technicians: Perform daily checks, document readings, and report malfunctions.
• QA: Audits calibration and maintenance records for compliance.
• Vendors/Service Engineers: Perform external calibration and preventive maintenance.
• Sponsor: Ensures laboratory has qualified and compliant equipment for clinical trial testing.

Accountability

The Laboratory Manager is accountable for ensuring that calibration and maintenance activities are performed and documented according to this SOP. QA is accountable for oversight and compliance verification.

Procedure

1. Equipment Qualification
1.1 Perform IQ (Installation Qualification), OQ (Operational Qualification), and PQ (Performance Qualification) before use.
1.2 Maintain qualification certificates in Equipment File.

2. Calibration Schedule
2.1 Prepare and maintain an Equipment Calibration Schedule (Annexure-1).
2.2 Calibrate balances, pipettes, and pH meters quarterly; LC-MS/MS and HPLC systems as per vendor guidance.
2.3 Record calibration details in Calibration Log (Annexure-2).

3. Daily Equipment Checks
3.1 Verify balances with standard weights daily.
3.2 Record refrigerator/freezer temperatures twice daily.
3.3 Document findings in Daily Equipment Check Log (Annexure-3).

4. Preventive Maintenance
4.1 Perform preventive maintenance annually or as per vendor specifications.
4.2 Maintain Maintenance Log (Annexure-4).

5. Calibration and Maintenance Records
5.1 File calibration certificates issued by external vendors.
5.2 Retain records in the Trial Master File (TMF).

6. Out-of-Tolerance Equipment
6.1 If equipment fails calibration, quarantine immediately.
6.2 Record in Out-of-Tolerance Log (Annexure-5).
6.3 Investigate impact on data and initiate CAPA.

7. Vendor Qualification
7.1 Vendors must be qualified through audits and maintain ISO/GLP certifications.
7.2 Document vendor qualification in Vendor Qualification Log (Annexure-6).

Abbreviations

• SOP: Standard Operating Procedure
• IQ: Installation Qualification
• OQ: Operational Qualification
• PQ: Performance Qualification
• QA: Quality Assurance
• CAPA: Corrective and Preventive Action
• GLP: Good Laboratory Practice
• TMF: Trial Master File

Documents

1. Equipment Calibration Schedule (Annexure-1)
2. Calibration Log (Annexure-2)
3. Daily Equipment Check Log (Annexure-3)
4. Maintenance Log (Annexure-4)
5. Out-of-Tolerance Log (Annexure-5)
6. Vendor Qualification Log (Annexure-6)

References

• ICH E6(R2/R3) – Laboratory Equipment Requirements
• FDA – Equipment Calibration and Maintenance Guidance
• EMA – Laboratory Compliance Standards
• CDSCO – Laboratory Instrument Compliance
• WHO – Laboratory Quality Standards

Version: 1.0

Approval Section

Annexures

Annexure-1: Equipment Calibration Schedule

Annexure-2: Calibration Log

Annexure-3: Daily Equipment Check Log

Annexure-4: Maintenance Log

Annexure-5: Out-of-Tolerance Log

Annexure-6: Vendor Qualification Log

Revision History

For more SOPs visit: Pharma SOP