DAkkS Accreditation according to DIN 17025

The DIN EN ISO/IEC 17025 standard places requirements on the respective testing laboratory. These requirements are implemented internally through the introduction of a quality management system (hereinafter referred to as QM) and are inspected and certified by the DAkkS at regular intervals.

The QM is binding for all employees of the accredited business unit and forms the basis for all activities of this unit. The management bodies of the TZWL are also bound by the QM. All work in the accredited area is protected from decisions by the management bodies that contradict the objectives of the accreditation by guaranteeing the inspection body appropriate freedom and scope for decision-making.

The accreditation guarantees the neutrality, impartiality and confidentiality of the inspection body. TZWL has been working according to these principles since its foundation.

It goes without saying that an accredited test center provides all the necessary resources for the high-quality performance of testing activities. The focus here is on sophisticated and highly specialized measurement technology. Regular modernization and intensive maintenance and care are a must. Contracts, services such as maintenance work and the production of materials are only awarded to selected partners who have already proven their quality and reliability in the past. At best, our partners work according to their own QM systems and have their own accreditations.

Of particular importance is the monitoring of the measuring equipment used for the tests. In addition to the aforementioned strict selection of suppliers, this includes regular calibration intervals, internal control tests, detailed reworking of measurement errors or inaccuracies and a continuous improvement and control process of the testing and calibration procedures. It almost goes without saying that the measurement data obtained is recorded and managed in such a way that it can always be clearly assigned to the orders and is strictly protected against loss or unauthorized access.

Participation in round robin tests with other accredited national and international testing laboratories ensures the quality and comparability of the results.

All cooperation, whether with partners, customers or service providers, is based on structured processes. To this end, there is an intensive exchange with the partners.

The test principles, mostly based on standards, are subject to a continuous improvement and optimization process. In addition to strict error management, this also includes regular audits. TZWL also contributes its many years of experience to the standards work.

There are specifications regarding qualifications and clear task structures for the personnel to be selected for the audits. Regular further and advanced training events are a matter of course. The QM forms the basis for this personnel policy.

Last but not least, with regard to upcoming changes in QM, processes or technical changes, there are procedures and specifications that ensure that all employees of the inspection body are always and regularly made aware of the new processes and receive any additional qualifications that may be required.

Compliance with the QM specifications and the high quality of the test results obtained are reflected in the accreditation symbol on our test reports.