EXPANDED UNCERTAINTY

As part of our A2LA accreditation, we provide expanded uncertainty data, the universally accepted statistic for calibration data, with all of our calibrated viscometers. Expanded uncertainty is a more comprehensive and meaningful term than "precision" because it incorporates all variables in the measurement process. ISO publications define expanded uncertainty as "quantity defining the interval about the result of a measurement within which the values that could reasonably be attributed to the measurement may be expected to lie with a high level of confidence." It is critical to consider expanded uncertainty when comparing viscometer accuracy.

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