Community Research and Development Information Service - CORDIS


Certification of reference materials is far more than just characterization of a selected homogenous batch of material. From a perspective of the ISO Guide to the Expression of Uncertainty in Measurement all uncertainty sources relevant to the user of an individual CRM sample at a moment in time should be part of the CRM uncertainty. This not only includes the full uncertainty 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, IRMM, JRC-Geel (BE);VAN DER VEEN A M H, Nederlands Metinstituut (NL)
Bibliographic Reference: Paper presented: EURACHEM, Helsinki (FI), 13-15th June 1999
Availability: Available from Public Relations and Publications Unit, Ispra (IT)
Record Number: 199911167 / Last updated on: 1999-08-19
Original language: en
Available languages: en