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Technical articles, industry analysis, and expert perspectives on sterile
manufacturing engineering — drawn from 38+ years of hands-on experience.
Annex 1 §8.50 — Is Total Sensor Separation Really Required?
Total physical separation between autoclave control and monitoring instrumentation is one valid solution — but it isn’t the only one. Modern integrated PLC-based systems can
Clarifying the True Purpose of the Bowie-Dick Test
The Bowie-Dick test confirms that an autoclave is functioning correctly. It does not — and cannot — guarantee that the items you sterilize later in
Using FBIO in Overkill Moist Heat Sterilization Cycles
Biological indicators are living systems. Their results carry real value — but interpreted in isolation, they can mislead. Here’s how FBIO should sit inside the broader
oRABS Air Intake — A Design Flaw Hiding in Plain Sight
Ceiling-mounted air intakes on open Restricted Access Barrier Systems disrupt critical airflow patterns in Grade B cleanrooms. Here’s why — and what the right answer
Annex 1 §8.38 — Is Minimum-Load Validation Actually Required?
Annex 1 calls for a justified, risk-based load-validation strategy — not automatic validation of every maximum and minimum load. In high-lethality overkill cycles, dropping the
Use of Representative Load Configurations in Validation of Multiple Loading Patterns
Validating each loading pattern individually creates a substantial workload. A single, scientifically justified representative load configuration can validate them all — fully compliant with Annex
In Praise of the URS — The First Milestone of Every Project
After 38+ years in pharmaceutical engineering, the lesson is unchanged: skipping the URS is the single most reliable way to waste money, miss deadlines, and
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