ISO/IEC General requirements for the competence of for the competence of testing and calibration laboratories, and I would like. We should let ISO be guidance for the users of measuring equipment and let ISO G25//Z be for the calibration labs. ISO/IEC and the relevant requirements for calibration and testing uncertainties of measurement, to calibrate measuring and test equipment, to.

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Measuring equipment usually has several metrological characteristics. The validity of the test and calibration results is controlled through internal quality methods.

Undermanagement review is completed according to a predetermined schedule, which does not have to be annual. ISO is a guidance document and not intended for certification. And detailed records must be maintained through the entire process. While the Z does not specifically require traceability to International System of Units SI units, such traceability would be implied by traceability to national or international standards.

The requires job descriptions for managerial, technical, and key personnel and encourages job descriptions for personnel involved in calibration or testing. Finally, where the Z requires a traceability statement, the calls for proof of traceability.

Difference Between ISO/IEC 17025 and ISO 10012

From the scope of ISO For testing services, only the applies. Falibration work of preparing International Standards is normally carried out through ISO technical committees. Some of the sections of the Z are ambiguous and subject to interpretation.

However if you are performing calibrations for other companies, and you are not accredited yet, I strongly recommend Z The laboratory and the client must fully understand and agree on the calibration or testing services io.


Both internal and externally generated documentation such as regulations, standards, procedures, test or calibrations instructions, drawings, software procedures, equipment specifications, and manuals are included. If you want to generate true confidence of measurement that your customers and AB appreciate, then of all of those standards, I recommend Z Relevant training records of calibration personnel shall be available to the laboratory.


In summary, the scopes of the Z and the contain important similarities and differences: Note 1 to entry: If calibrations are just a subsidiary aspect of your business, then spending the money to get accredited may not be necessary, especially if its for internal use only. The was written to include the requirements for both calibration and testing laboratories by demonstrating that the laboratory operates in a technically competent manner under the confines of a documented quality system producing valid results.

Management Review An annual management review of the quality system is required by Z The Z has been an American National Standard since No article or discussion of the differences can replace the personal knowledge of the laboratory personnel responsible for implementation of the standards in the organization.

This International Standard includes both requirements and guidance for implementation of measurement management systems, and can be useful in improving measurement calibratioh and the isso of products.

Comparison of ANSI/NCSL Z to ISO/IEC

The QA system requires the identification of those individuals who are authorized and considered competent to provide opinions and interpretations and to specify the extent of their capabilities. The Z requires findings and corrective actions resulting from audits to be documented and that the individual responsible for quality should ensure that corrective actions are completed on time. Department of Defense requirements. General requirements for the competence of testing and calibration laboratoriesand I would like guidance on usage and application of these standards.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The requirements appear in normal typeface.


The Z does not caliration address opinions and interpretations. The excludes this list but outlines corrective action procedures. The Z also requires statements of traceability on calibration reports. ISO focuses on the requirements of the measurement management system. ISO shall not be held responsible for identifying any or all such patent rights.

If the customer requires calibration services only, either standard may be applicable, though only the meets international requirements. The statement is contained in a list of 21 items that are to be contained in the quality manual. It encompasses all aspects of the laboratory.

Guidance is for information only and is not to be construed as adding to, limiting, or modifying any requirement. The client and the laboratory must agree upon the appropriate method of calibration. Laboratories need to fully investigate these two standards and come to an understanding of their differences. Managing the Measurement SystemQuality Progress Discussion related to the importance and timing of equipment calibration.

General principles and definitions. Organizations have the responsibility to determine the level of controls needed cqlibration to specify the measurement management system requirements to be applied as part of their overall management system.


There is a great deal of richness in the ISO family of documents and it is a shame for users to not know about and take advantage of the full range of possibilities. Internal Audits Procedures for internal audits and review are part of the quality manual requirements of Z References to this International Standard can be made. Basic methods for the determination of repeatability and reproducibility of a standard measurement method.