SOP for Operation and Calibration of UV Cabinet

-

SOP FOR OPERATION AND CALIBRATION OF UV CABINET

GMP Compliant | QC Laboratory | Pharmaceutical Applications

1. Purpose

To provide a detailed, step-by-step procedure for the operation, calibration, and maintenance of the UV Cabinet to ensure proper UV light exposure, accurate wavelength, and reproducible results for analytical and photostability studies.

2. Scope

This SOP applies to all UV Cabinets used for photostability testing, degradation studies, and any UV exposure tests performed in the QC or R&D laboratory.

3. Responsibilities

  • Analyst: Operate the UV Cabinet, perform calibration, and record results.
  • QC Supervisor: Review calibration records and approve operations.
  • QA: Ensure compliance with GMP and review deviations.

4. Safety Precautions

  • Wear PPE including lab coat, UV-protective goggles, and gloves.
  • Avoid direct exposure to UV light to prevent skin and eye damage.
  • Ensure proper ventilation inside the lab.
  • Handle UV lamps carefully; avoid breakage and dispose properly.

5. Equipment Description

  • UV Cabinet with specified wavelength lamps (e.g., 254 nm, 365 nm)
  • Digital or analog UV radiometer / UV intensity meter
  • Timer or exposure controller
  • Calibration standard filters or radiometric standards
  • Cleaning materials (soft cloth, alcohol)

6. Calibration Procedure

6.1 UV Lamp Inspection

  1. Switch ON the UV Cabinet and allow lamps to warm up for 10–15 minutes.
  2. Check lamps visually for any signs of cracks, dark spots, or flickering.
  3. Replace any damaged lamps before calibration.

6.2 UV Intensity Calibration

  1. Place the calibrated UV radiometer at the sample plane inside the cabinet.
  2. Switch ON the UV lamp at the target wavelength (e.g., 254 nm).
  3. Record the intensity reading in μW/cm² or mW/cm².
  4. Repeat measurements at 3–5 different positions to check uniformity.
  5. Acceptance criteria: Intensity within ±10% of nominal lamp output and uniformity ≥80% across sample plane.

6.3 Wavelength Verification

  1. Use a certified wavelength filter or UV calibration standard.
  2. Place the standard at the sample plane and measure transmitted UV light with a radiometer.
  3. Confirm wavelength accuracy against certified value.
  4. Acceptance criteria: Wavelength accuracy within ±2 nm.

6.4 Timer/Exposure Verification

  1. Set UV exposure timer to a known duration (e.g., 10 minutes).
  2. Run a test exposure and measure elapsed time with a calibrated stopwatch.
  3. Acceptance: Timer error ≤ ±1% of set time.

7. Operational Procedure

7.1 Pre-Operation

  1. Verify cabinet is clean and free of dust or debris.
  2. Ensure all lamps are functioning and calibrated.
  3. Check timer and radiometer availability.

7.2 Sample Exposure

  1. Place samples evenly on the sample tray or platform inside the cabinet.
  2. Set required wavelength and exposure time according to method.
  3. Close cabinet doors completely to prevent UV leakage.
  4. Switch ON lamps and timer; monitor exposure periodically.
  5. After completion, switch OFF lamps and carefully remove samples.

7.3 Post-Operation

  1. Clean cabinet interior with soft cloth and alcohol.
  2. Inspect lamps for wear or damage.
  3. Switch OFF power and close doors.
  4. Document all exposure and calibration readings.

8. Acceptance Criteria

  • UV intensity: ±10% of nominal output.
  • UV wavelength accuracy: ±2 nm.
  • Timer: ±1% of set exposure time.
  • Uniformity: ≥80% across the sample plane.
  • Cabinet doors fully functional with no UV leakage.

9. Documentation

  • Record all calibration readings, operational checks, and sample exposures in the instrument logbook.
  • Include date, operator name, and any deviations observed.
  • QA approval required for all calibration and operational records.

10. Troubleshooting & Preventive Maintenance

  • Check lamp intensity regularly; replace if below specification.
  • Clean cabinet and sample platform weekly to avoid contamination.
  • Verify timer and radiometer calibration every 6 months or as per company SOP.
  • Inspect doors and seals monthly to prevent UV leakage.
  • Report any abnormal readings or lamp failures immediately to QC Supervisor.

Prepared By: ____________________

Reviewed By: ____________________

Approved By: ____________________

Effective Date: ____________________

SOP No.: __________    Revision No.: _____

Comments

Post a Comment

Popular posts from this blog

-
⚠️SOP for Risk Management and Risk Assessment (FMEA, RPN, HAZOP, SWOT) This Standard Operating Procedure (SOP) describes a comprehensive risk management and risk assessment framework using FMEA, RPN, HAZOP, and SWOT methodologies. It supports pharmaceutical quality systems in accordance with ICH Q9 and ISO 31000 for effective identification, evaluation, mitigation, and monitoring of risks. 1. Introduction Risk Management is a structured approach to identify, assess, mitigate, and monitor risks in laboratory, R&D, QC, manufacturing, and quality systems. This SOP provides step-by-step instructions for multiple risk assessment techniques, including FMEA, RPN, HAZOP, and SWOT analysis, ensuring robust evaluation, prioritization, and mitigation of risks. 2. Purpose To establish a standardized framework for risk identification, analysis, evaluation, mitigation, monitoring, and continuous improvement using multiple validated risk assessment techniques, ens...
Read more

SOP for Operation and Calibration of UV-Visible Spectrophotometer

-
SOP for UV-Visible Spectrophotometer Operation & Calibration SOP for UV-Visible Spectrophotometer Operation & Calibration SOP Code: [Assign Code] Version: 1.0 Effective Date: [Insert Date] Review Date: [Insert Date] Prepared by: [Name / Designation] Approved by: [Name / Designation] 1. Purpose To provide detailed instructions for safe operation, calibration, and verification of UV-Visible spectrophotometers in compliance with IP, USP, BP, and EP standards to ensure accurate and reliable analytical results. 2. Scope This SOP applies to all analysts and QC personnel performing routine or validation analysis using UV-Visible spectrophotometers. 3. Responsibilities Role Responsibility Analyst / Technician Operate the instrument, prepare standards, perform calibration, and record results. QC / QA Officer Review and approve calibration logs, ensure compliance with pharmacopeial requirements. Maintenance Personnel Perform preventiv...
Read more

Operation and Calibration of Tap Density Apparatus

-
Operation and Calibration of Tap Density Apparatus 1. Purpose To establish a standardized and detailed procedure for the operation, calibration, and maintenance of the Tap Density Apparatus used for determination of bulk density and tapped density of powders, granules, and solid materials in accordance with pharmacopeial and GMP requirements. 2. Scope Quality Control laboratories Research and Development laboratories Production and in-process testing laboratories Any department performing bulk and tap density analysis 3. Definitions Bulk Density: Mass of powder divided by its untapped volume. Tapped Density: Mass of powder divided by the volume after mechanical tapping. Tap Density Apparatus: Instrument that mechanically taps a graduated cylinder to obtain reproducible tapped volume. Carr’s Index: Measure of compressibility calculated from bulk and tapped density. Hausner Ratio: Ratio of tapped density to bulk density. ...
Read more