ISO 13909-7:2001
Hard coal and coke - Mechanical sampling - Part 7: Methods for determining the precision of sampling, sample preparation and testing

Standard No.

ISO 13909-7:2001

Release Date

2001

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 13909-7:2016

Latest

ISO 13909-7:2016

Scope

In this part of ISO 13909, equations are developed which link the variables which 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.

ISO 13909-7:2001 history

• 2016 ISO 13909-7:2016 Hard coal and coke - Mechanical sampling - Part 7: Methods for determining the precision of sampling, sample preparation and testing
• 2001 ISO 13909-7:2001 Hard coal and coke - Mechanical sampling - Part 7: Methods for determining the precision of sampling, sample preparation and testing