Cleaning Validation
What a definition is not
A definition is SPEQ’s plain-language decode of how a term is used in practice, cited to the documents that define it. It is a practitioner reference, not legal or regulatory advice, it does not replace the definition in the source, and where a regulator’s wording differs the regulator’s wording governs.
Cleaning validation is the documented evidence that a cleaning procedure reliably removes product residues, cleaning agents, and microbial contamination from shared or product-contact equipment to below scientifically justified limits. It protects the next product made on the same equipment from cross-contamination and demonstrates the process is reproducible, not a one-off clean.
A modern program is health-based: residue acceptance limits derive from a Permitted Daily Exposure (PDE) or Health-Based Exposure Limit (HBEL) rather than the older 10 ppm / 1/1000th-of-dose rules of thumb, which regulators now treat as secondary checks rather than the primary basis.
Validation covers the worst-case product (hardest to clean, most toxic, least soluble), the worst-case equipment location (hardest to reach), and the maximum dirty and clean hold times. Recovery studies establish how much residue the swab or rinse method actually retrieves, and that recovery factor is applied to every result.
- —Limits are health-based (PDE/HBEL), with dose- and ppm-based limits as secondary references.
- —Worst-case product, worst-case location, worst-case hold times drive the study design.
- —Sampling recovery must be established and applied to reported residue results.
- —Commonly demonstrated across three consecutive successful cleaning runs.
EU GMP Annex 15 (2015), cleaning validation section; ICH Q7 §12 (Validation), cleaning validation; EMA guideline on setting health-based exposure limits (EMA/CHMP/CVMP/SWP/169430/2012).
Frequently asked questions
What is Cleaning Validation?
Cleaning validation is the documented evidence that a cleaning procedure reliably removes product residues, cleaning agents, and microbial contamination from shared or product-contact equipment to below scientifically justified limits. It protects the next product made on the same equipment from cross-contamination and demonstrates the process is reproducible, not a one-off clean.
Which regulations cover Cleaning Validation?
EU GMP Annex 15 (2015), cleaning validation section; ICH Q7 §12 (Validation), cleaning validation; EMA guideline on setting health-based exposure limits (EMA/CHMP/CVMP/SWP/169430/2012).