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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

General information
Valid from 23.06.2016
Directives or regulations
None

Standard history

Status
Date
Type
Name
23.06.2016
Main
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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