Author: digi

Ensuring Consistency Across Multiple Lux Meters in Pharmaceutical Calibration

In pharmaceutical environments, particularly in photostability testing, the use of multiple lux meters is common across different stability chambers and QA teams. However, inconsistencies between these instruments can result in variability in data and regulatory non-compliance. Ensuring alignment across all lux meters is essential for accurate light intensity measurement and audit-readiness. 1. Why Consistency Across…

Equipment and Calibration

SOP for Conducting Stability Testing for Biosimilars in Compliance with WHO Guidelines

SOP for Conducting Stability Testing for Biosimilars in Compliance with WHO Guidelines Procedure for Stability Testing of Biosimilars 1) Purpose The purpose of this SOP is to establish a procedure for conducting stability testing for biosimilar products in compliance with the World Health Organization (WHO) guidelines. This ensures that biosimilars maintain their quality, safety, and…

Stability Studies SOP

Include Container Torque and Closure Integrity Testing in Stability

Understanding the Tip: Why closure integrity matters during stability studies: Container-closure systems serve as the first line of protection for pharmaceutical products. If the seal loosens or fails during storage, it can lead to evaporation, contamination, degradation, or even microbial ingress. Torque and closure integrity testing ensure that screw caps, crimped seals, flip-off caps, and…

Stability Study Tips

Validating Photostability Test Software Interface and Data Integrity

Photostability testing is a critical component of drug development and stability programs. Beyond just measuring light intensity with lux or UV meters, it’s equally important to ensure the software interfaces used in recording and analyzing data are validated and compliant with regulatory expectations. This article walks pharma professionals through the essentials of validating software interfaces…

Equipment and Calibration

Troubleshooting Failed Light Intensity Readings in Photostability Testing

Accurate measurement of light intensity is essential in photostability testing as per ICH Q1B. Failed light readings from lux meters or UV sensors can invalidate test results, cause regulatory deviations, or even trigger product recalls. This tutorial provides a step-by-step GMP-compliant troubleshooting protocol to resolve these issues effectively in pharmaceutical setups. 1. Understand the Role…

Equipment and Calibration

Use Condition-Specific SOPs for Sample Withdrawal During Stability

Understanding the Tip: Why condition-specific procedures are necessary for stability programs: Stability studies often run across multiple environmental conditions—such as long-term (25°C/60% RH), intermediate (30°C/65% RH), and accelerated (40°C/75% RH)—each with different risks for sample integrity. Using a one-size-fits-all approach for withdrawal compromises control. Condition-specific SOPs ensure that each chamber’s risks, handling time, exposure limits,…

Stability Study Tips

SOP for Implementing Stability Testing for Pediatric Formulations under US FDA and EMA Guidelines

SOP for Implementing Stability Testing for Pediatric Formulations under US FDA and EMA Guidelines Procedure for Stability Testing of Pediatric Formulations 1) Purpose The purpose of this SOP is to define the procedures for conducting stability testing for pediatric formulations in compliance with US FDA and EMA guidelines. This ensures that pediatric formulations maintain their…

Stability Studies SOP

How to Handle Calibration Drift in Light Testing Instruments

Calibration drift is a gradual loss of measurement accuracy over time in instruments such as lux meters and UV radiometers. In GMP environments where photostability testing is guided by ICH Q1B, even minor drifts in light measurement tools can impact product quality and regulatory compliance. This guide explains how pharmaceutical teams can detect, investigate, and…

Equipment and Calibration

Never Extrapolate Shelf Life Without Robust Stability Data

Understanding the Tip: Why shelf life must be based on evidence, not assumptions: Shelf life indicates the time frame during which a product remains safe, effective, and compliant with specifications under recommended storage conditions. Extrapolating beyond actual data—especially without long-term support—can misrepresent product quality and lead to critical issues during audits, inspections, or post-marketing surveillance….

Stability Study Tips

Template for Photostability Test Meter Calibration Report in GMP Setup

In Good Manufacturing Practice (GMP) environments, meticulous calibration documentation is essential for audit readiness and product quality assurance. When performing GMP-compliant calibration of lux meters and UV radiometers used in photostability chambers, your calibration report becomes a critical regulatory artifact. This tutorial presents a standardized, audit-ready template that meets ICH Q1B expectations and ISO 17025…

Equipment and Calibration