Preparing for an internal audit against ISO/IEC 17025:2017? This free ISO 17025 internal audit checklist walks through the key requirements clause by clause, from impartiality to the management system, so nothing important is missed.
What’s inside
- Clause 4–8 audit items (impartiality, structure, resources, process, management system)
- Tick-box format for evidence verification
- Print-ready PDF
What the ISO 17025 internal audit checklist covers
The checklist follows the structure of ISO/IEC 17025:2017: general requirements (clause 4, impartiality and confidentiality), structural requirements (clause 5), resource requirements (clause 6), process requirements (clause 7) and management system requirements (clause 8). Each item prompts you to look for objective evidence rather than simply asking whether a procedure exists.
Why internal audits matter for accreditation
Clause 8.8 of ISO/IEC 17025 requires laboratories to conduct internal audits at planned intervals. A well-run internal audit shows your assessor that the management system is implemented and effective — and it helps you find gaps while there is still time to fix them.
Tips for a more effective laboratory internal audit
- Plan the audit to cover every clause and every area of your scope over the audit cycle.
- Use auditors who are independent of the activity being audited where possible.
- Sample real records — test reports, calibration certificates, training files — rather than reviewing procedures only.
- Record non-conformities clearly and link each one to a corrective action with an owner and due date.
Who this checklist is for
Quality managers, internal auditors, technical managers and laboratory staff in testing and calibration laboratories that are accredited to ISO/IEC 17025 or working toward accreditation.
Need the full documentation set?
This free checklist is a starting point. For a complete editable quality management system, see the ISO 17025 Templates Bundle (125 editable documents). To understand every clause in depth, read the ISO/IEC 17025 Guide — From Standard to Accredited Laboratory, or order a custom ISO 17025 documentation package written for your lab.
How to plan your ISO 17025 internal audit program
Most laboratories plan internal audits on an annual cycle so that every clause of ISO/IEC 17025:2017 and every area of the scope is covered at least once. Higher-risk activities — new methods, areas with past non-conformities or recent changes in staff or equipment — can be audited more often. Keep an audit schedule, audit plans, completed checklists and reports as records, because your assessor will ask to see them.
After each audit, feed the findings into your corrective action process and the management review. That link between internal audits, corrective actions and management review is what demonstrates a working management system.
Download the free ISO 17025 internal audit checklist
Use this free ISO 17025 internal audit checklist alongside your own copy of the standard, ISO/IEC 17025:2017, and any specific requirements published by your national accreditation body. The checklist tells you what to look for; the standard and your accreditation body’s rules define exactly what is required.
Many laboratories adapt a free ISO 17025 internal audit checklist into their controlled documents by adding their own document number, revision and approval block, then filing completed checklists as internal audit records.
Frequently asked questions
Which version of ISO/IEC 17025 does the checklist follow?
It follows ISO/IEC 17025:2017 and covers clauses 4 to 8.
Can I use this checklist for my accreditation assessment?
It is an educational starting point for internal audits. It does not replace the full standard or the requirements of your accreditation body.
What format is the checklist?
A print-ready PDF you can print or use on screen.
