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Abstract

Certification of reference materials is far more than just characterization of a selected homogeneous batch of material. From the perspective of the ISO Guide on the Expression of Uncertainty in Measurement (GUM) all uncertainty sources relevant to the user of an individual certified reference material (CRM) sample at a moment in time should be part of the CRM uncertainty. This not only includes the full uncertainty of the batch characterization (rather than the statistical variation), but also all uncertainties related to possible between-bottle variation, instability upon long-term storage and instability during transport to the customer.

Additional information

Authors: PAUWELS J, Institute for Reference Materials and Measurements, EC-JRC-IRMM, Geel (BE);LAMBERTY A, Institute for Reference Materials and Measurements, EC-JRC-IRMM, Geel (BE);SCHIMMEL H, Institute for Reference Materials and Measurements, EC-JRC-IRMM, Geel (BE);VAN DER VEEN A, Netherlands Meetsinstituut, Delft (NL)
Bibliographic Reference: Article: Accredited Quality Assurance (2000) No. 5, pp. 95-99
Availability: Accredited Quality Assurance (Journal)
Record Number: 200012254 / Last updated on: 2000-08-10
Category: PUBLICATION
Original language: en
Available languages: en
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