ISO 17025 or ISO 9001 for your laboratory?
ISO/IEC 17025 focuses on competent laboratory work and reliable results. ISO 9001 focuses on an organisation’s quality management system. For testing laboratories, the RvA grants accreditation based on ISO 17025 . An ISO 9001 certificate does not prove that a specific laboratory test falls under that accreditation.
The most useful starting question is therefore: what evidence does your client or customer expect? “We want quality” is not yet a clear specification. Ask whether they mean the organisation of your processes, the competence for a specific test, or both.
The differences side by side
| Question | ISO 9001 | ISO/IEC 17025 |
|---|---|---|
| Main focus | Quality management of products and services | Competence and consistency of laboratory activities |
| Usual recognition | Certification of the management system | Accreditation of the laboratory for described activities |
| Technical boundary | Scope of the quality management system | Activities, methods and locations within the accreditation scope |
| Example of evidence | Process control, customer feedback and improvement | Method justification, expertise, equipment and results |
| What does not follow automatically? | Accreditation of laboratory tests | A separate ISO 9001 certificate for the whole company |
The standards share management principles, such as responsibilities, control of records and improvement. The joint statement from ISO, ILAC and IAF, published by NIST , explains that ISO 17025 contains both technical competence and management system requirements. That overlap does not make the two forms of evidence interchangeable.
Fictional example: a manufacturer with its own laboratory
Metal company Linde supplies components and has an in-house laboratory. The factory uses ISO 9001 to manage, among other things, order review, purchasing, production and complaints. A new client also asks for an accredited report for a specific material test.
Linde can investigate whether its in-house laboratory activity qualifies for accreditation. It can also buy the test from a suitable accredited laboratory. In both cases, the client request must be compared precisely with the scope of accreditation.
Existing ISO 9001 records can be useful during preparation. However, they do not replace the justification of the method, the equipment or the expertise for that test. Conversely, an accredited test does not mean that all of Linde’s production processes fall under the same recognition.
Can you use one management system?
You can combine shared processes if that works for the organisation. For example, one method for document control, internal audits and corrective actions. Then record where the laboratory-specific requirements are addressed.
| Shared process | What can you combine? | What stays specific to the laboratory? |
|---|---|---|
| Document control | Versions, approval and availability | Technical methods and calculations |
| Training | Records and training planning | Demonstrated competence for specific activities |
| Internal audit | Annual schedule and follow-up | Assessment of technical performance |
| Nonconformities | Root cause analysis and effectiveness checks | Consequences for results already issued |
This is our own example of how to structure it. An integrated system must still meet all applicable requirements. When you prepare an application, show where you address those requirements.
Do you need ISO 9001 first?
A separate ISO 9001 certificate is not a general requirement for applying for ISO 17025 accreditation. ISO 17025 contains its own management system requirements. The standard allows different ways to meet them. Discuss your chosen approach and evidence with the RvA.
A client may separately require ISO 9001 certification. In that case, it is a requirement of the job that you must assess separately. If it is unclear, ask which certificate, which scope and which accreditation the client accepts.
When you receive a quote, ask for the exact evidence document and the activities it covers. “We have ISO” does not describe what you will receive.
Frequently asked questions
Can an ISO 9001-certified company test reliably?
It can, but the certificate alone does not establish ISO 17025 accreditation for a specific test. Determine what technical evidence your job requires.
Does every laboratory need both?
No. Your activities, clients and applicable requirements determine which route fits. Avoid duplicate processes until you have defined the purpose and the scope required.
Is accreditation the same as product approval?
No. Accreditation concerns competence for the laboratory activities described. A tested product may also have its own requirements or assessment routes.