![]() section 6) in accordance with the 2013 edition of the ILAC P14 Policy. In this article, I will cover how to calculate uncertainty in measurement results for calibration certificates (i.e. The Statement of Uncertainty of Measurement on Calibration Certificates.Scopes of Accreditation of Calibration Laboratories, and.The Estimation of Measurement Uncertainty,.The ILAC P14 policy covers three main sections, ILAC’s policy on I have used this same calculator, by incorporating it into some of my templates, to calculate calibration uncertainty for UUT’s with more than 1000 test points! In this article, I will show you how to use my calculator to calculate calibration uncertainty. In addition to this article, I have also created a calibration uncertainty calculator for Microsoft Excel that I have used for years to quickly calculate calibration uncertainty. Furthermore, I hope to bring awareness to this requirement and demonstrate that it can be easily met with a few small changes. ![]() Therefore, I hope this article will help laboratories calculate calibration uncertainty correctly. They either calculate calibration uncertainty incorrectly, report uncertainty incorrectly, or have not even included the requirements in their quality system. Now, five years after the enforcement of the original policy, there are still a lot of laboratories that have problems meeting the requirements today. Additionally, I have also seen some accreditation bodies delay enforcement, for unknown reasons. I have seen a significant number of laboratories being cited for deficiencies related to ILAC P14. Then, the problems got worse with the release of the 2013 revision of the ILAC P14. When the policy was first enforced in 2011, many laboratories struggled to meet the requirements. In 2010, the ILAC P14 policy significantly changed the way laboratories calculate and report calibration uncertainty. Therefore, I decided to write an article to help those who struggle to meet the requirement of this policy. Additionally, I have received a lot of phone calls from labs needing help to calculate calibration uncertainty. Since the introduction of the ILAC P14 policy, the number of deficiencies related measurement uncertainty have exponentially grown. ![]() Calculating calibration uncertainty is a problem for many accredited laboratories. ![]()
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