Petroleum products - Determination and application of precision data in relation to methods of test

رقم المستند: NL 340 : 2000
القطاع: Construction Materials and Building
TC: NL TC FP
ICS:
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 (clause 5 and 6), and the procedure to be followed in the interpretation of laboratory results in relation both to precision of the methods and to the limits laid down in specifications (clauses 7 to 10). It is emphasised that the procedures in this International Standard are designed to cover methods of test for petroleum products only. The latter are, in general, homogeneousproducts with which serious sampling problems do not normally arise. It would not be appropriate, therefore, to consider the procedures to be necessarily of wider application, for example to heterogeneous soli