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ISO 13909-7:2016

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

Publication date:   Jun 23, 2016

95.99   Withdrawal of Standard   Jul 22, 2025

General information

95.99   Withdrawal of Standard   Jul 22, 2025

ISO

ISO/TC 27/SC 4 Sampling

International Standard

73.040   Coals | 75.160.10   Solid fuels

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 13909-7:2001

NOW

WITHDRAWN
ISO 13909-7:2016
95.99 Withdrawal of Standard
Jul 22, 2025

REVISED BY

PUBLISHED
ISO 13909-7:2025




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