ISO 11726:2017 PDF

Scope: This document describes procedures for validating alternative methods of analysis for coal and coke either directly by comparison with the relevant International Standard method or indirectly by comparison with reference materials that have been exhaustively analysed using the relevant International Standard method. The statistical analysis methods used are parametric, i.e. their use is possible only when the characteristic is expressed as a simple number on an approximately linear scale. The results from some methods, for example the Gray-King coke type, are not so expressed and the methods given here need to be used only if the data are converted to a parametric scale.

ISO 11726:2017 Referenced Document

ISO 351:1996 Solid mineral fuels - Determination of total sulfur - High temperature combustion method
ISO 3534-1:2006 Statistics - Vocabulary and symbols - Part 1: General statistical terms and terms used in probability
ISO 5725-6:1994 Accuracy (trueness and precision) of measurement methods and results - Part 6: Use in practice of accuracy values

2017 ISO 11726:2017 Solid mineral fuels - Guidelines for the validation of alternative methods of analysis
2004 ISO 11726:2004 Solid mineral fuels - Guidelines for the validation of alternative methods of analysis