Proving your controls actually work

Plain-language summary

Before relying on a control measure, validate it - show with evidence it's capable of achieving the level of hazard control you need.

What the clause is really asking

Choosing a control is not enough; you must demonstrate it can do the job. Validation is the up-front evidence - scientific data, challenge studies, published thermal-death models, supplier data - that a control measure or combination is genuinely capable of controlling the hazard to the required level. It answers 'how do you know this cook step actually kills the pathogen?'

What auditors look for

Auditors ask for the validation behind each CCP and OPRP critical limit: where did this cook time-temperature, this pH, this metal-detector sensitivity come from. They want scientific or technical justification, not a number someone copied. Validation must be revisited when things change.

Typical evidence

Validation studies and references; scientific/technical justification for critical limits; challenge test results; supplier or literature data supporting controls

How to comply — recommendations

For every critical limit, hold the evidence that it works - published data, a challenge study, recognised process authority guidance, or your own trials. Re-validate when you change recipe, equipment, packaging or process. Do not confuse validation (does it work in principle) with verification (is it working in practice).

Common nonconformities

Critical limits with no validation basis; controls not re-validated after a change; validation and verification confused

Resources for this clause

• ArticleHACCP plan explained: the 12 steps, a worked hazard analysis, and where CCPs end and OPRPs begin
• Toolkit · $29HACCP Plan ToolkitA complete HACCP study in one workbook: rate likelihood and severity and the significance answers itself; answer five plain-English questions and the workbook tells you whether it is a CCP, an OPRP or a prerequisite programme.
• Free downloadHACCP Flow & Product Description TemplateThe first five steps of a HACCP study — the two documents every hazard you find later is built on, and the two where more studies go wrong than anywhere else.
• Free masterclass · ~20 minHACCP Plan MasterclassThe Codex 12 steps end to end on one worked product — the hazard analysis, the significance matrix, the five determination questions, and the honest test for telling a CCP from an OPRP.