Technical Articles

How long is ISO 17025 good for?

ISO 17025 is an international standard that specifies the general requirements for the competence of testing and calibration laboratories. It provides a framework to ensure that laboratories are capable of producing accurate, reliable, and consistent results. However, one question that often arises is how long the ISO 17025 certification remains valid. Let's explore this topic in detail.

The validity period

ISO 17025 certification is not a one-time achievement; it requires regular audits and assessments to maintain compliance. The standard does not specify a fixed duration for the validity of the certification. Instead, it emphasizes the need for periodic evaluations to ensure continued compliance with the requirements.

The frequency of these evaluations depends on various factors such as the size and complexity of the laboratory, the nature of its activities, and any regulatory or customer-specific requirements. Generally, most laboratories undergo a reassessment every two to three years, although some may require annual audits.

Benefits of periodic evaluations

Periodic evaluations serve several purposes. Firstly, they help laboratories identify and address any deviations from the standard's requirements or changes in their operations. This proactive approach allows for continuous improvement and helps maintain the quality of testing and calibration services.

Secondly, regular assessments provide assurance to customers and stakeholders that the laboratory's operations remain in accordance with international standards. This enhances confidence in the reliability of the laboratory's results and facilitates acceptance of those results globally.

Staying up-to-date with evolving standards

ISO 17025 is periodically reviewed and updated to incorporate advancements in technology and address emerging requirements. It is essential for laboratories to stay informed about these changes and update their systems accordingly. Failure to comply with the latest version of the standard can result in the loss of certification.

To stay up-to-date, laboratories should actively monitor notifications from the accreditation bodies and participate in relevant training programs. By doing so, they can ensure that their practices align with the most recent version of ISO 17025 and continue to deliver reliable results to their clients.


ISO 17025 certification is valid for as long as the laboratory maintains compliance with its requirements. Regular assessments are necessary to ensure continued adherence to the standard. Staying informed about updates to ISO 17025 is equally important to avoid any lapses in certification. Through these measures, laboratories can demonstrate their competence, enhance their credibility, and uphold the quality of their testing and calibration services.



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