International Standard
ISO 13909-7:2016
Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample preparation and testing
Reference number
ISO 13909-7:2016
Edition 2
2016-07
© ISO 2024
International Standard
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Published (Edition 2, 2016)
This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 13909-7:2016

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CHF 173
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2016-07
    Stage
    : International Standard to be revised [90.92]
  • Edition
     : 2
    Number of pages
     : 43
  • Technical Committee :
    ISO/TC 27/SC 4
    ICS :
    73.040  75.160.10 
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