Active standard | Published: 22/07/2025

ISO 13909-7:2025-ed.3.0

Coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample preparation and testing
(Charbon et coke — Échantillonnage mécanique — Partie 7: Méthodes pour la détermination de la fidélité de l´échantillonnage, de la préparation de l´échantillon et de l´essai)

Available languages: English

Available design: electronic design (pdf), Print design

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Detail information

Designation: ISO 13909-7:2025-ed.3.0

Publication date: 22/07/2025

Pages: 42

Country: International technical standard

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Anotation

Description / Abstract: This document defines methods for estimating overall precision and for deriving values for primary increment variance which can be used to modify the sampling scheme to change the precision. Methods for checking the variance of sample preparation and testing are also described. In this document, formulae are developed which link the variables that contribute to overall sampling precision.

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