Linked Life Data

11451233

Source:http://linkedlifedata.com/resource/pubmed/id/11451233

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
2001-7-13
pubmed:abstractText
The new version of ISO Guide 34 requires producers of certified reference materials (CRMs) to include contributions of possible instability to the overall CRM uncertainty, to obtain a value for the uncertainty in compliance with the Guide to the Expression of the Uncertainty in Measurement (GUM). A pragmatic approach to estimating the uncertainty of stability is presented. It relies on regression analysis of stability data with subsequent testing of the slope of the regression line for significance. If the slope is found to be statistically insignificant, a shelf life is chosen and the uncertainty connected with this time is estimated via the standard deviation of the slope. This uncertainty is included in the overall uncertainty of the CRM. This approach is explained with examples showing its applicability to matrix CRMs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0937-0633
pubmed:author
pubmed:issnType
Print
pubmed:volume
370
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
183-8
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Estimating the uncertainty of stability for matrix CRMs.
pubmed:affiliation
European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel, Belgium.
pubmed:publicationType
Journal Article