Author: digi

Data Recording Standards for Photostability Calibration Activities

Photostability testing is a cornerstone of pharmaceutical stability studies. Ensuring proper calibration of lux and UV meters used in photostability chambers is critical, but equally important is the standard and accuracy of the data recorded during such calibration activities. Regulatory bodies including the USFDA and ICH expect comprehensive, traceable, and audit-ready documentation of all calibration…

Equipment and Calibration

Common Issues in Light Source Validation and Troubleshooting

Accurate light exposure is a critical requirement in GMP photostability testing of pharmaceutical products. Validating the performance of light sources used in these chambers—typically involving lux meters and UV sensors—is not just good practice, but a regulatory expectation aligned with ICH Q1B guidelines. However, many pharma professionals encounter recurring issues during light source validation, ranging…

Equipment and Calibration

Track Stability Commitments for Post-Approval Submissions

Understanding the Tip: Why tracking post-approval stability commitments is critical: After product approval, regulatory authorities often require ongoing stability studies as part of lifecycle maintenance. These commitments may support shelf-life extension, packaging changes, market-specific conditions, or verification of ongoing quality. Failing to track and fulfill these commitments can delay renewals, trigger non-compliance flags, or result…

Stability Study Tips

SOP for Implementing Stability Testing for Orally Inhaled and Nasal Drug Products (OINDP) under FDA Guidelines

SOP for Implementing Stability Testing for Orally Inhaled and Nasal Drug Products (OINDP) under FDA Guidelines Procedure for Stability Testing of Orally Inhaled and Nasal Drug Products 1) Purpose The purpose of this SOP is to define a procedure for conducting stability testing for orally inhaled and nasal drug products (OINDP) in accordance with US…

Stability Studies SOP

How to Select a Certified Reference Instrument for Light Calibration

In pharmaceutical environments governed by Good Manufacturing Practice (GMP), accurate measurement of light exposure during photostability testing is a regulatory requirement. To ensure the reliability of these measurements, the lux or UV meters used in photostability chambers must be calibrated using a certified reference instrument. Selecting the correct reference tool is a foundational step in…

Equipment and Calibration

SOP Guidelines for Lux Meter Calibration in GMP Facilities

Accurate light intensity measurements are crucial in pharmaceutical stability studies, especially under ICH Q1B photostability testing protocols. Lux meters, used to measure light intensity in photostability chambers, must be calibrated regularly to ensure compliance, accuracy, and reproducibility. This article outlines a detailed SOP (Standard Operating Procedure) framework for calibrating lux meters within GMP-regulated facilities, with…

Equipment and Calibration

Validate Label Ink Durability on Containers for Long-Term Stability

Understanding the Tip: Why label ink validation is crucial for stability programs: Labels on stability containers are essential for identifying batch numbers, pull dates, test conditions, and product specifications. Over the course of a long-term study—often 12 to 36 months—these labels must remain intact and legible under a range of environmental conditions. Fading, smearing, or…

Stability Study Tips

SOP for Conducting Stability Studies for Controlled Drugs under Regulatory Guidelines

SOP for Conducting Stability Studies for Controlled Drugs under Regulatory Guidelines Procedure for Stability Testing of Controlled Drugs 1) Purpose The purpose of this SOP is to establish a procedure for conducting stability studies for controlled drugs in compliance with relevant regulatory guidelines. This ensures that controlled substances maintain their quality, safety, and efficacy throughout…

Stability Studies SOP

Understanding Calibration Traceability of UV Meters: From Source to Certificate

In the pharmaceutical and life sciences industry, UV light meters are critical for ensuring accurate photostability testing. However, the accuracy of these meters is only as reliable as their calibration. Regulatory bodies such as USFDA and EMA mandate full traceability of instruments used in quality control testing, especially those involved in ICH Q1B photostability studies….

Equipment and Calibration

Include Extractables and Leachables Testing in Stability Protocols When Needed

Understanding the Tip: Why extractables and leachables (E&L) matter in stability: Extractables are compounds that can be released from packaging materials under aggressive conditions, while leachables are those that migrate into the product under actual storage conditions. When left unchecked, these compounds can compromise drug purity, potency, and safety. E&L testing during stability ensures the…

Stability Study Tips