What is a normalized Error (En)? Abnormalized error (En)compares a laboratory’s measurement result and its associated uncertainty to a reference value and its uncertainty, in order to determine if there is an agreement between the two. If the absolute value of Enis greater than 1, the two measurements are considered not to be in agreement. For more information on calculating En, […] Read more »
How do you want me to calibrate your artifact? The main goal of any enrollment is to compare measurements using your processes and reference values and evaluate your results against other like organizations. Read more »
Why are my En calculations different from the values on your reports? The En value may differ because the values used in the calculation by the participant and by NAPT are not always identical. The values used on both preliminary and final reports are calculated in accordance with ISO 13528 to ensure accuracy and consistency. For participants, the reported resolution is influenced by the resolution of the […] Read more »
Why aren’t the En values on the preliminary report? The primary purpose of the preliminary report is to confirm that NAPT has accurately entered your data submittal into the QMS Navigator Management Application. Issuing a preliminary report with values that may change would be inappropriate and potentially misleading. Read more »
How do I submit my revised data? All revised data can be submitted either through your Customer Portal or directly to napt@proficiency.org. Please note: when submitting revised data, you must provide objective evidence supporting your request. All revision requests are subject to approval before any data can be officially revised. Read more »
What are reference values? The reference value is the value against which your results are compared. In any proficiency test, the validity of the results depends on the quality and reliability of the established reference values. NAPT’s process for establishing reference values was designed in collaboration with leading statisticians in the metrology community, including technical oversight from statisticians at […] Read more »
What is a Measured Value (MV)? The set point / nominal value that is listed on the data reporting sheet (DRS). Read more »
How should I select my Measured Values? Measured Values should be selected based on your scope of accreditation and the normal measurements you make for your customers. Read more »
I finished making measurements – where do I send the kit next? Once NAPT receives your Data Reporting Sheet (data submittal), a ship-to notification will be emailed to the primary contact. This notification will include the required next destination for the kit. It is essential to follow these shipping instructions exactly—failure to follow instructions will result in additional fees. Read more »
Can I talk with someone about an unsatisfactory measured value? Yes, please send a detailed email—along with any relevant documents—to napt@proficiency.org. NAPT staff will connect you with the appropriate technical advisor or our Technical Manager, who will be able to assist you. Read more »
