top of page
All Posts


Rethinking the Rationale for the Number of Process Validation Batches
The legacy “three batches” may no longer sail through regulatory review The long‑standing convention of running three Process Validation batches has never been grounded in statistical science. Regulations have always placed the burden on manufacturers to justify the number of batches, with the true standard being: demonstrate homogeneity within a batch and consistency between batches. Despite this, the three‑batch approach persisted for decades because it rarely triggered reg

Elizabeth Zybczynski
4 days ago2 min read


What Process Validation Really Means — And Why We Keep Getting It Wrong
If process validation feels like a box-checking exercise in your organization, you’re not alone. Too often, validation is run as a disconnected set of tasks—leaving gaps that show up later as process deviations, nonconforming product, and a lack of confidence in day-to-day output.
See what process validation is really meant to achieve—and how a mindset shift can turn it into a practical, value-added system that improves predictability and quality, rather than a last-minute co

Elizabeth Zybczynski
Apr 266 min read
bottom of page