GSO ISO 13909-7:2013
ISO 13909-7:2001
Gulf Standard
Current Edition
·
Approved on
31 December 2013
Hard coal and coke -- Mechanical sampling -- Part 7: Methods for determining the precision of sampling, sample preparation and testing
GSO ISO 13909-7:2013 Files
English
40 Pages
Current Edition
Reference Language
USD
80.69
GSO ISO 13909-7:2013 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.
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