Standard Operating Procedure for Maintaining Calibration Schedules of Instruments in AMD
| Department | Analytical Method Development |
|---|---|
| SOP No. | SOP/AMD/320/2025 |
| Supersedes | SOP/AMD/320/2022 |
| Page No. | Page 1 of 12 |
| Issue Date | 01/06/2025 |
| Effective Date | 03/06/2025 |
| Review Date | 01/06/2026 |
1. Purpose
The purpose of this SOP is to establish a standardized process for preparing and maintaining instrument calibration schedules to ensure instruments remain within valid calibration status and support data integrity in Analytical Method Development (AMD) operations.
2.
Scope
This procedure applies to all analytical instruments and equipment used within the AMD department, including but not limited to HPLC systems, balances, pH meters, UV-Vis spectrophotometers, and dissolution apparatus.
3. Responsibilities
- AMD Analyst: Ensures compliance with calibration schedules and reports overdue calibrations to the supervisor.
- QA Representative: Verifies calibration schedule updates and audit trail integrity.
- Instrumentation Coordinator: Maintains master calibration schedule, coordinates with vendors, and documents calibration certificates.
4. Accountability
The Head of Analytical Method Development is accountable for ensuring that the calibration schedules are accurate, up to date, and that no equipment is operated beyond its calibration due date.
5. Procedure
5.1 Identification of Calibrated Instruments
- Prepare a comprehensive list of all analytical instruments used within the AMD department.
- Assign each instrument a unique ID number, location code, and calibration frequency (monthly, quarterly, semi-annually, or annually).
- Update the Instrument Master List (Annexure-1) after any addition or decommissioning of instruments.
5.2 Master Calibration Schedule
- Create a centralized Master Calibration Schedule in both hardcopy and electronic format.
- Include instrument ID, location, calibration frequency, last calibration date, due date, and responsible person.
- Use color-coded markers or Gantt charts for visual management of due calibrations.
5.3 Execution of Calibration
- Verify calibration standard validity before execution.
- Use SOP-specific calibration procedures as outlined in instrument-specific SOPs (refer SOP/AMD/301–310 series).
- Document calibration data in calibration logbooks and obtain QA review.
5.4 Handling Overdue Calibrations
- Do not use any instrument past its calibration due date.
- Label such instruments as “Calibration Overdue – Do Not Use.”
- Initiate deviation if instrument was inadvertently used while overdue.
- Perform impact assessment and record in Deviation Log (Annexure-2).
5.5 Document Control and Certificate Management
- All calibration certificates must be signed, dated, and filed as per QA archival procedures.
- Electronic certificates should be saved in PDF format in a restricted-access QA folder.
- QA should verify digital signatures and lock certificate files to prevent unauthorized changes.
5.6 Review and Compliance Monitoring
- QA shall review the Master Calibration Schedule monthly and flag any upcoming or missed calibrations.
- Internal audits should assess compliance with this SOP during routine GMP audits.
6. Abbreviations
- AMD: Analytical Method Development
- QA: Quality Assurance
- SOP: Standard Operating Procedure
- ID: Identification
7. Documents
- Master Calibration Schedule – Annexure-1
- Deviation Log Format – Annexure-2
- Calibration Certificate Filing Checklist – Annexure-3
8. References
- ICH Q10 – Pharmaceutical Quality System
- 21 CFR Part 211.68 – Automatic, Mechanical, and Electronic Equipment
- USP Chapter <1058> – Analytical Instrument Qualification
- WHO Technical Report Series 957 – Quality Assurance of Pharmaceuticals
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | Deepa Saxena | Ravi Sethi | Dr. Harshita Goyal |
| Designation | Calibration Officer | QA Reviewer | Head – Analytical Method Development |
| Department | AMD | Quality Assurance | Analytical Method Development |
11. Annexures
Annexure-1: Master Calibration Schedule (Excerpt)
| Instrument ID | Name | Location | Last Calibration | Due Date | Status |
|---|---|---|---|---|---|
| HPLC-102 | Waters Alliance HPLC | Lab-1 | 05/05/2025 | 05/11/2025 | Active |
Annexure-2: Deviation Log Format
| Deviation ID | Description | Date | Impact | Action Taken |
|---|---|---|---|---|
| DEV-320-01 | Calibration overdue by 5 days | 10/04/2025 | Low | Calibrated and impact assessed |
Annexure-3: Calibration Certificate Filing Checklist
- Certificate signed and dated by calibration engineer
- Review sign-off by QA
- Unique certificate ID and instrument tag matched
- Electronic certificate saved in secure folder
Revision History:
| Revision Date | Revision No. | Details | Reason | Approved By |
|---|---|---|---|---|
| 01/06/2025 | 2.0 | Added electronic documentation process and audit trail handling | Annual SOP Review | Dr. Harshita Goyal |
| 15/09/2022 | 1.0 | Initial SOP Release | New SOP | QA Head |