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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ISO defines requirements for entire quality management system that can be accredited. The Z is less emphatic on this point and states that the laboratory must be legally identifiable. Under the Z, calibrations are validated through methods of internal quality control.

The client and the laboratory must agree upon the appropriate method calibrration calibration. Management shall formulate goals for training, education, and skills. The excludes this list but outlines corrective action procedures. No ca,ibration or discussion of the differences can replace the personal knowledge of the laboratory personnel responsible for implementation of the standards in the organization.

For more information on traceability, refer to the NIST website: This standard has been accepted by Mutual Recognition Arrangement as caibration international standard for accreditation of calibration and testing laboratories.

ISO – Wikipedia

Except by agreement, this International Standard is not intended to add to, subtract from, or replace any requirements of other standards. There is a great deal of richness in the ISO family of documents and it is a shame for users to calibraiton know about and take advantage of the full range of possibilities.


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. Alternative methods for the determination of the precision of a standard measurement method.


Any changes or improvements to the system should be addressed in the review. The goal of calibration interval analysis is to reduce out-of-tolerance conditions to an acceptable level based on the quality requirements of the organization.

ISO is a guidance document and not intended for certification. The methods used for the measurement management system range from basic equipment verification to the application calibrayion statistical techniques in the measurement process control.

The requires laboratories to valibration and maintain a procedure for quality and technical records.

The is clearer, requiring written procedures for the control of all quality system documents with regards to approval, issue, review, and change. Thehowever, requires internal audits to cover all the elements of the quality system and that they xalibration planned under the quality manager according to a predetermined schedule.


Discussion related to the importance and timing of equipment calibration. In general, the is more prescriptive and has czlibration and added to the ISO Guide 25 requirements upon which the Z Part I is based.

This is an issue of legal responsibility and accountability for the calibration work performed by the laboratory or organization. Although manufacturers may designate time periods over which products should perform without degradation, the makes clear that it is the responsibility of the end-user organization to determine the appropriate calibration interval under the requirements of its own quality system.


Metrological confirmation generally includes calibration and verification, any necessary adjustment or repair, and subsequent recalibration, comparison with the metrological requirements for the intended use of the equipment, as well as any required sealing and labelling.

The focuses on the competency of the legally responsible bodies providing test and calibration services. Note 2 to entry: I am updating the instrumentation section of a product fabrication specification to replace a cancelled military specification MIL-STD that specified calibration 10012- requirements. This International Standard includes both requirements and callibration for implementation of measurement management systems, and can be useful in improving measurement activities and the quality of products.

ISO describes the requirements for a quality management system that can be accredited a process comparable but different from certification.

Difference Between ISO/IEC 17025 and ISO 10012

We have outlined only some of the differences in these two standards. The work of preparing International Standards is normally carried out through ISO claibration committees. ISO focuses on the requirements of the measurement management system. Denise Robitaille Vice Chair, U.

While the scope of both documents includes language that can perhaps cause confusion, what follows is the salient text from both that illuminates the difference between the two. Only the covers both calibration and testing services. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.