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Use in practice of accuracy values. If this is not true, the respective equations given in IS0 should be used to calculate s. The laboratory bias is further considered in IS0 Ein grundlegendes Verfahren fuer die Ermittlung der Wiederhol und Vergleichspraezision von festgelegten Messverfahren.
Saudi Standards, Metrology and Quality Organization. 57725-2 of the results showed that the between- bottle variation was indeed insignificant; the sample was considered to be homogeneous. Accept and continue Learn more about the cookies we use and how to change your settings. Relevant International Standards on sample division should be consulted.
There again, appropriate action should be taken by investigating these laboratories, or, if necessary, by tightening the protocol of the measurement method. This requires an experiment involving many laboratories, very much as described in IS0 A technical corrigendum was issued for this standard after its publication.
Methode de base pour la determination de la repetabilite et de la reproductibilite d’une methode de mesure normalisee. If the bias is found to be statistically insignif- icant, then the objective is to determine the magnitude of the maximum bias that would, with a certain 572-52, remain undetected by the results of the experiment. If the repeatability standard deviation of the standard measurement method has not been previously deter- mined in accordance with IS0s, will be con- sidered to be the best estimate of it.
The test results for each level are shown in figures B.
GSO ISO – Standards Store – GCC Standardization Organization
In the latter case, it is necessary to investigate the causes of the discrep- ancy and possibly to repeat the experiment prior to proceeding further. Ministry of Commerce and Industry.
Unless otherwise specified, no part of this publrcation may be reproduced or utrlized In any form or by any means, electronrc or mechanical, rncludrng photocopyrng and mrcrofilm, wrthout permission in writing from the publisher. Annex A forms an integral part of this part of Iwo All standards are subject to revision, and parties to agreements based on this part of IS0 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Bias can arise, 57252- example, in chemical analysis if the measurement method fails to extract all of an element, or if the presence of one element interferes with the determination of another.
I understand that I cannot print or share electronic products. Alternative methods for the determination of the precision of a standard measurement method – Part 6: In chemical anal- ysis, problems may arise from, for example, insufficient control of temperature, moisture, pres- ence of contaminants, etc.
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ISO Accuracy of measurement methods and results-Part 2 Basic method – MBA智库文档
You may experience issues viewing this site in Internet Explorer 9, 10 or A Awar G 1, The k values figure B-7 show that laboratories Basic method for the determination of repeatability and re- producibility of a standard measurement method – Part 3: The variation of the estimate of the bias of the measurement method is due to the variation in the results of the measurement process and is expressed 5275-2 its standard deviation computed as in the case of known precision values, or siJzT-yF .
The symbols used in IS0 are given in annex A. What action is to be taken concerning its publication? The files of this standards is not available in the store right now. When gR is larger than T. Take the smart route to manage medical device compliance.
The work of preparing International 5725- is normally carried out through IS0 technical committees. What action should be taken with respect to re- jected outlying laboratories?
BS ISO 5725-2:1994
Unless otherwise stated, a is assumed to be 0. Further regular testing is required to show that the labora- tory bias does isso vary; the method described in IS0 may be used for this. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
However, for practical reasons, the choice of the number of laboratories is usually a compromise between the availability of re- sources and the desire to reduce the value of 6, to a satisfactory level. Basic methods for the determination of repeatability and reproducibility of a 575-2 measurement method. General principles and definitions.