Introduction A common question people ask is “When should I update my uncertainty budgets?” or “How often should I update my uncertainty budgets?” Since the question so common, I decided to create an article to answer the question and offer advice. In this article, you will learn more about the following: When to […]
Introduction Simple acceptance is a decision rule that has been around for a long time (whether you knew what it was named or not). The best way to explain it is a set of rules used to determine whether a test or measurement result passes or fails based on the tolerance limits. Typically, […]
Introduction Statements of conformity and decision rules are two issues that have become a topic of discussion since the revision of the ISO/IEC 17025 standard. The new requirements have become more demanding, assessors are writing deficiencies, and people have a lot of questions about how to comply. So far, accreditation bodies are providing training […]
Introduction Emissivity is a source of uncertainty that affects IR temperature (i.e. radiation thermometry). It should be included in uncertainty budgets for blackbody calibrators and IR Thermometers. However, many ISO/IEC 17025 accredited laboratories have not included emissivity uncertainty in their budgets because their lab personnel did not know how to evaluate it. Furthermore, […]
Introduction There has been a lot of discussion on guard band and guard banding methods lately. Especially, with regard to statements of conformity and decision rules, and how you take uncertainty into account. This led me to look further into different guard banding methods. Currently, there have been a couple of recommended methods […]
Introduction Has your assessor ever asked you if you validate uncertainty budgets? If so, I know your pain. It is frustrating! You have spent countless hours estimating uncertainty and creating uncertainty budgets just to have an assessor discredit all your hard work. Unfortunately, they are not wrong. They just want to make sure that […]
Introduction A laboratory’s scope of accreditation is a key element of ISO/IEC 17025 accreditation and a vital asset to your customers. It lists all of the activities that your laboratory is accredited perform. However, many laboratories forget to consider its importance when getting accredited or reaccredited. They just rush to develop a scope of […]
Introduction Measurement traceability is an important factor for your laboratory to meet the requirements of ISO/IEC 17025 accreditation. In fact, measurement traceability is one of the top 10 cited deficiencies of all ISO/IEC 17025 audits. If you are not currently meeting this requirement, I encourage you to read this article to learn how to get […]
Need to find an ISO 17025 Accredited Laboratory? Today, I answered a question on LinkedIn and thought it would be an excellent post to share on my blog. The post asked a question that I encounter quite often, “Does anyone know where I can find a list of metrology labs in the US?” Well, I […]
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