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Please Click Here to Find Out How David Trew Consulting Ltd Can Help Your Laboratory Achieve ISO 17025 Accreditation
Please Click Here to Find Out How David Trew Consulting Ltd Can Help Your Laboratory Achieve ISO 17025 Accreditation

The Process of Achieving ISO 17025 Accreditation

Dr David Trew BSc (Hons), PhD, CChem MRSC

1 Introduction

This article discusses the process of achieving accreditation to the International Organisation for Standardisation (ISO) International Standard ISO/IEC 17025:2017 General Requirements for the Competence of Testing and Calibration Laboratories1. This paper is intended to provide laboratories seeking accreditation to the ISO/IEC 17025:2017 International Standard, the activities that need to be carried out to achieve accreditation, and what will happen at each stage of the assessment process.

This article is primarily targeted at laboratories seeking accreditation for the first time. However, parts of it will also be of interest to laboratories that are already accredited and are seeking reaccreditation.

The ISO/IEC 17025:2017 International Standard establishes a set of requirements that form a framework for individual testing and calibration laboratories to construct a quality management system (QMS) to meet their specific needs. Accreditation of a testing or calibration to the ISO/IEC 17025:2017 International Standard provides objective, impartial and independent evidence that a laboratory is both technically competent to perform the tests or calibrations and maintains a quality management system that is designed to assure the quality of the tests or calibrations carried out.

Because ISO/IEC 17025:2017 is recognised as the gold standard for laboratory quality management systems, the results delivered by laboratories that have achieved ISO/IEC 17025:2017 accreditation are internationally recognised, and such laboratories have access to the global marketplace.

2 Selecting an Accrediting Organisation

Accrediting organisations carry out assessment and accreditation to the ISO/IEC 17025:2017 International Standard. Such organisations must be a party to the International Laboratory Accreditation Cooperation (ILAC) mutual recognition agreement or one of the regional mutual recognition agreements. Such as European Co-operation for Accreditations (EA) in Europe, Inter American Accreditation Cooperation (IAAC) North and South Americas, Asia Pacific Accreditation Cooperation Incorporated (APAC), Arab Accreditation Cooperation (ARAC) and African Accreditation Cooperation (AFRAC). Some countries have several organisations that are party to the ILAC mutual recognition agreement. In contrast, other countries have appointed a specific body to carry out all accreditations within their jurisdiction, as is the case in Europe, where the European Union Regulation 765/20082 requires member states to appoint a single national accrediting body. In the United Kingdom Statutory Instrument 2009 No. 31553, establishes the United Kingdom Accreditation Services (UKAS) as the sole official accrediting body of the United Kingdom.

When selecting an accrediting body, it is important to consider the following:

1. Does the organisation have experience with your type of testing or calibration? This can be checked by reviewing the accreditation certificates issued by the body. These should be on the body’s website.

2. Is the accrediting body recognised for its accreditation program? This can be checked by reviewing either the International Laboratory Accreditation Cooperation website (www.ilac.org.) or the regional accreditation cooperation website.

3. Does the accrediting body have assessors qualified to conduct assessments in your particular scope of calibration or testing? Where are the assessors located?

4. Is the accrediting body willing to provide you with a complete description of its accreditation process? What are their policies or contractual restrictions that may affect you?

5. Is the accrediting body allowed to operate in your jurisdiction?

6. Is the company financially stable? Will the accrediting body still be in business during the period that your accreditation certificate is valid?

3 The Accreditation Process

Although some of the details of the accreditation process may depend on the accrediting body you choose, the overall process will be the same irrespective of the body you use and consists of the following steps.

1. Prepare for Accreditation

2. Filing an Application

3. Preliminary Assessment (Optional)

4. Document Review

5. Onsite Assessment

6. Corrective Actions

The timings of these activities will depend on the accrediting body you have selected. Some bodies require applicants to have at least implemented the quality management system and be able to submit a quality manual and procedures at the time of submitting their application. In contrast, other accrediting bodies will allow you to submit your application without these documents and are happy to wait until the applicant is ready to send them.

4 Preparing for Accreditation

Your laboratory will be ready for accreditation after:

1. You have implemented an ISO/IEC 17025:2017 compliant quality management system,

2. Your employees have become familiar with the system, and

3. You have developed a sufficient evidentiary trail of documents and records that can be assessed.

Documentation should include the following:

Quality Manual: Outlining how your laboratory conforms to each clause of the International Standard;

Procedures: Describing how the activities required by the QMS are carried out consistently;

Work Instructions: Defining specific job activities affecting the quality of calibration or


Quality Documentation: Documents, which explain how quality will be managed for

individual calibration or testing projects or contracts,

The following records will also be required:

Quality Records: Various records such as testing or calibration records, assessment results, and any other records which provide objective evidence that you are conforming with the requirements of the ISO/IEC 17025:2017 International Standard

Internal Audit Reports: Recording the areas, documents and records that have been examined to ensure conformance with the QMS. Together with any nonconformity reports.

Records Supporting the Validity of Test or Calibration Results: This should include results of performance tests or inter-laboratory comparison studies, together with the results of intralaboratory performance monitoring studies.

Staff Training Records: Including all training undertaken, together with a plan of intended training activities

Equipment Calibration and Maintenance Records: This should include calibration certificates and maintenance records, together with a calibration and maintenance program.

5 Filing an Application

Filling an application for assessment for accreditation to the ISO/IEC 17025:2017 International Standard, after you have selected your accrediting body, will usually involve completing an application form and usually entail providing information about your laboratory, including the following:

1. What is your desired time frame for accreditation?

2. What is your laboratory’s scope of testing or calibration? You will probably also be asked to provide information about your laboratory’s capability, such as measurement ranges and the associated uncertainty.

3. What is the legal status of your laboratory?

4. Is your laboratory freestanding or part of a larger facility?

5. What is the status of your existing laboratory management system implementation?

6. What is the state of your laboratory management system documentation?

You may also be asked to submit uncontrolled copies of some or all of the following documents:

1. Quality Manual

2. Set of quality procedures

3. Quality policy

4. Test or calibration methods you wish to be accredited for

If these documents are not required at the application stage, they will be needed later on before the initial document assessment.

The information you provide must be as complete and as accurate as possible, as this will allow the accrediting body to provide you with the best estimates of cost and the likely time frame involved.

After you have completed and submitted the application package, the accrediting body will send either a quote or an estimate of the costs for the assessment. If you have submitted your application to several accrediting bodies (this will not always be possible), it is important to compare the estimates or quotes carefully and ensure you are clear about what you are being offered for your money and what you are being offered meets your requirements.

You will be required, at some time, to sign some documents establishing a contract between your laboratory and the accrediting body. You may be required to do this during the application or after you have received an estimate of costs.  

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