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ISO 4259

3rd Edition, August 1, 2006

Complete Document

Petroleum Products - Determination and Application of Precision Data in Relation to Methods of Test

Includes all amendments and changes through Change/Amendment , August 1, 2006

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Superseded By: ISO 4259-2

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ENGLISH * W/D S/S BY ISO 4259-1, ISO 4259-2
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Description / Abstract:

This International Standard covers the calculation of precision estimates and their application to specifications. In particular, it contains definitions of relevant statistical terms (Clause 3), the procedures to be adopted in the planning of an inter-laboratory test programme to determine the precision of a test method (Clause 4), the method of calculating the precision from the results of such a programme (Clauses 5 and 6), and the procedure to be followed in the interpretation of laboratory results in relation both to precision of the test methods and to the limits laid down in specifications (Clauses 7 to 10).

The procedures in this International Standard have been designed specifically for petroleum and petroleumrelated products, which are normally homogeneous. However, the procedures described in this International Standard can also be applied to other types of homogeneous products. Careful investigations are necessary before applying this International Standard to products for which the assumption of homogeneity can be questioned.
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