Standard

NEN-ISO 13909-7:2016 en

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

143,10

About norm

Status Current
Number of pages 43
Committee Vaste Minerale Brandstoffen
Published on 01-09-2016
Language English
NEN-ISO 13909-7 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.

Details

ICS-code 73.040
75.160.10
Dutch title Steenkool en cokes - Mechanische monsterneming - Deel 7: Methoden voor de bepaling van de precisie van monsterneming, monsterpreparatie en analyse
English title Hard coal and coke - Mechanical sampling - Part 7: Methods for determining the precision of sampling, sample preparation and testing
Replaces

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