The answer to this question is simple. As previously discussed, the assessment for accreditation is quite rigorous. There are a handful of factors that play into a laboratory being deemed as competent and compliant with ISO 17025 standard, but it is these factors that ensure quality results. Accrediting bodies use ISO 17025 standard to specifically assess factors such as, staff competence, validity of test methods, traceability of measurements and calibrations to national standards, appropriateness and conditions of testing environment, sampling and handling of test items, maintenance of equipment and quality assurance of data.
When choosing a laboratory for maintenance of your equipment and instrumentation, it is essential to look for a lab that can meet your needs and also give you accurate results. Accredited calibration labs are guaranteed to have personnel with the highest level of technical competence, a monitored laboratory environment and precise equipment traceability. Unlike laboratories without an accreditation certificate, accredited labs live, breathe and eat maintenance. Through proficiency tests and internal checks, accredited laboratories are continually being assessed to ensure they stay within ISO 17025 standard. It is important to note that not all unaccredited laboratories are equal, therefore not all calibrations are equal. This is why choosing an accredited calibration lab is crucial; it will automatically guarantee accuracy of calibrations.
Accrediting bodies closely observe laboratory personnel to ensure they understand how to operate the equipment and how the equipment affects the calibration results
Accredited laboratories are required to meet the highest industry standard, ISO 17025
When equipment and instrumentation is properly maintained, risks of calibration inaccuracy are minimal
Accreditation requires that all the equipment used to calibrate items must be traceable through an unbroken chain of calibrations.
The assessment process ensures that the labs environment does not invalidate the results of calibrations or adversely affect the required quality of a measurement
Accredited labs are required to calculate measurement uncertainty for each parameter. This is required to be listed on the labs scope of accreditation.
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