Lux Meter Usage Procedure

Purpose

The purpose of this Standard Operating Procedure (SOP) is to establish the procedures for the proper operation of a lux meter. This ensures accurate measurement of light intensity in photostability chambers and other laboratory environments.

Scope

This SOP applies to all personnel using lux meters for measuring light intensity within the facility.

Responsibilities

• Stability Manager: Ensure compliance with this SOP and oversee the proper use of lux meters.
• Laboratory Technicians: Operate the lux meter, document measurements, and report any deviations or malfunctions.
• Quality Assurance (QA) Team: Review and approve light intensity measurement records and reports.

Procedure

1. Preparation:
   • Ensure that the lux meter is clean and in good working condition.
   • Verify that the lux meter is within its calibration due date and properly certified.
   • Familiarize yourself with the lux meter’s user manual and operational procedures.
2. Measurement Setup:
   • Turn on the lux meter by pressing the power button.
   • Select the appropriate measurement mode (e.g., lux or foot-candles) as per the study protocol.
   • Ensure that
     

     “Mastering Drug Stability: Unveiling the Revised Principles and Practices to Ensure Effective Medication Longevity”

     the sensor is clean and free from any obstructions.
3. Taking Measurements:
   • Position the lux meter’s sensor at the location where the light intensity needs to be measured.
   • Hold the sensor steady and ensure it is facing the light source directly.
   • Allow the lux meter to stabilize and display a consistent reading.
   • Record the light intensity reading in the measurement log.
   • Repeat the measurement at multiple points within the photostability chamber to ensure uniform light exposure.
4. Data Recording:
   • Document all light intensity readings in a measurement log, including the date, time, and location of each measurement.
   • Record any observations or anomalies noted during the measurements.
   • Ensure the measurement log is complete, accurate, and signed by the personnel performing the measurements.
5. Post-Measurement:
   • Turn off the lux meter and store it in a clean, dry place.
   • Ensure that the lux meter is stored in a protective case to avoid damage.
   • Report any deviations or malfunctions to the Stability Manager and QA Team.
6. Maintenance:
   • Perform regular maintenance of the lux meter according to the manufacturer’s recommendations.
   • Calibrate the lux meter periodically to ensure accuracy.
   • Keep maintenance and calibration records up-to-date and accessible for review.
7. Record Keeping:
   • Maintain all measurement logs and calibration records in a centralized location for easy access and review.
   • Ensure electronic data is backed up regularly and securely stored.
   • Archive records according to the facility’s document retention policy and regulatory requirements.

Abbreviations Used

• QA: Quality Assurance
• SOP: Standard Operating Procedure

Documents

• Measurement Logs
• Calibration Records
• Maintenance Records

References

• Lux Meter User Manual
• Manufacturer’s Calibration Guidelines

SOP Version

Version 1.0 – Effective Date: [Insert Date]