ISO 13909-7:2016

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

Publication date: Jun 23, 2016

General information

Current stage: 90.92 Effective date: May 25, 2023

Originator: ISO

Owner: ISO/TC 27/SC 4

Type: International Standard

ICS: 73.040 75.160.10

Languages: English

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Status: Published

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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

Revises
ISO 13909-7:2001

NOW

PUBLISHED
ISO 13909-7:2016
90.92 Standard to be revised
May 25, 2023

REVISED BY

IN_DEVELOPMENT
ISO/DIS 13909-7

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