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ISO 21895:2026 Categorization and classification of civil uncrewed aircraft systems

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ISO 13909:2016

ISO 13909:2016 Hard coal and coke – Mechanical sampling – Part 7: Methods for determining the precision of sampling, sample preparation and testing

CDN $336.00

SKU: 111daf2018f8 Categories: ,

Description

In ISO 13909-7:2016, formulae are developed which link the variables that contribute to overall sampling precision. Methods are described 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.

Edition

2

Published Date

2016-06-23

Status

PUBLISHED

Pages

43

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

In ISO 13909-7:2016, formulae are developed which link the variables that contribute to overall sampling precision. Methods are described 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.

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